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苛立たしい

B1 adjective 12 min read

苛立たしい

iradatta shii

Practice it Examples Notes & Tips 苛立たしい in 30 Seconds

Explanation 苛立たしい in your Level:

At the A1 level, you don't need to use '苛立たしい' (iradatashii) yourself, but you might hear it. Think of it as a fancy way to say 'I'm a little angry because I'm waiting.' At this stage, you usually learn 'okotte imasu' (I am angry) or 'ira-ira shimasu' (I am frustrated). 'Iradatashii' is a bit more difficult because it is an adjective that describes the situation. For example, 'The bus is late. It is iradatashii.' It's like saying the bus being late is 'annoying.' You can remember it as the 'long version' of the feeling you get when your ice cream melts before you can eat it. It's a word for when things are just not going your way and you feel a little prickle of annoyance in your heart. Don't worry about the kanji yet; just focus on the sound 'ira-ira' which is the root of the word. If you hear someone say 'iradatashii,' they are probably not very happy with how things are going. It is a common word in stories and movies when a character is waiting for something important. Even at A1, knowing that 'ira' sounds mean 'irritation' will help you understand many Japanese words later on. It's a foundational sound for expressing negative, prickly feelings. Just remember: Iradatashii = Not happy because things are slow or annoying.

At the A2 level, you can start recognizing '苛立たしい' (iradatashii) as an i-adjective. This means it follows the same rules as 'samui' (cold) or 'oishii' (delicious). You can use it to describe things that bother you. For example, 'Kono geemu wa iradatashii' (This game is frustrating). You might use it when a game is too hard or has too many ads. You should also learn the past tense: 'iradatashikatta.' If you went to a restaurant and the service was very slow, you could tell your friend, 'Saabisu ga iradatashikatta desu' (The service was frustrating). It's a great word to add more 'color' to your Japanese. Instead of always saying 'iya' (bad/dislike), 'iradatashii' tells the listener *why* you dislike it—because it makes you feel impatient. You might also see this word in simple manga or hear it in anime when a character is trying to do something difficult. It's a step up from the basic 'ira-ira suru.' While 'ira-ira suru' is an action you do, 'iradatashii' is a quality of the situation. Learning this distinction helps you sound more natural. Try to use it for situations like slow internet, long lines, or when you can't remember a word you just learned. It's the perfect word for the small frustrations of daily life.

At the B1 level, you should be able to use '苛立たしい' (iradatashii) to describe complex situations and your reactions to them. This word is very useful for the 'Intermediate plateau' where you might feel 'iradatashii' because your Japanese isn't improving as fast as you'd like. You can use it to modify nouns, such as 'iradatashii omoi' (a frustrating feeling) or 'iradatashii joutai' (a frustrating state). At this level, you should also distinguish it from 'modokashii' (impatient/vexing). While 'modokashii' is often used when you yourself can't do something well, 'iradatashii' is often used when an external factor is causing the annoyance. For example, if you are stuck in traffic, the situation is 'iradatashii.' If you can't explain your feelings in Japanese, that is 'modokashii.' Understanding this nuance is key for B1. You should also practice using the adverbial form 'iradatashiku' to describe actions. 'Kare wa iradatashiku pen o ugokashita' (He moved his pen frustratingly/impatiently). This adds descriptive power to your writing. You'll encounter this word frequently in news articles about social issues or in literature. It’s a versatile word that bridges the gap between simple everyday speech and more formal, descriptive Japanese. Start noticing it in the wild—on TV shows, in books, and in conversations between native speakers.

At the B2 level, you should master the nuances of '苛立たしい' (iradatashii) in various registers. This includes understanding the suffix '-ge,' as in 'iradatashige' (seeming frustrated). This is crucial for describing other people's emotions objectively, which is a hallmark of sophisticated Japanese. Instead of saying 'He is frustrated,' you say 'He looks frustrated' (Kare wa iradatashige da), which is more polite and observant. You should also be able to use 'iradatashii' in formal settings, like a business meeting, to describe inefficient processes: 'Kono tetsuduki no zatsuzatousa wa iradatashii kagiri desu' (The complexity of this procedure is the height of frustration). At this level, you should also explore the etymology—the kanji 苛 (harsh) and 立 (to arise)—to deepen your connection to the word. You should be able to compare 'iradatashii' with its synonyms like 'haradatashii' (infuriating) and 'shaku ni sawaru' (getting on one's nerves) with precision. 'Iradatashii' is your go-to word for frustration stemming from a lack of progress or efficiency. It’s less about moral outrage (which is 'haradatashii') and more about the friction of a slow or broken system. You should also be comfortable using it in the negative 'iradatashiku nai' (not frustrating) and the conditional 'iradatashikereba' (if it is frustrating). Mastery at this level means using the word to express subtle degrees of impatience in both spoken and written Japanese.

At the C1 level, '苛立たしい' (iradatashii) should be a tool for nuanced psychological description. You should be able to use it to describe existential or abstract frustrations. For example, the 'iradatashii' feeling of living in a society that doesn't change, or the 'iradatashii' gap between one's ideals and reality. You should understand how 'iradatashii' functions in high-level literature, where it might be used to set a mood of stifling tension or restlessness. At this stage, you should also be familiar with more obscure related terms and idioms. You might use 'iradatashii' in an essay to critique a slow-moving political process, or in a professional critique of a piece of art that feels 'intentionally frustrating.' You should also be aware of the rhythmic quality the word brings to a sentence; the four syllables (i-ra-da-ta) followed by the 'shii' ending create a staccato feeling that mirrors the emotion itself. You should be able to use it interchangeably with 'madoiroshii' (slow and frustrating) in certain contexts or know when 'shaku ni sawaru' provides a more pointed, personal sting. Your usage should reflect an understanding of the social 'wa' (harmony) and how expressing 'iradatashii' can be a controlled way to signal dissatisfaction without breaking social decorum. It is about the precision of the 'itch'—knowing exactly where the friction lies and describing it with the exactness that 'iradatashii' provides.

At the C2 level, you possess a native-like intuition for '苛立たしい' (iradatashii). You understand its place within the vast landscape of Japanese emotional vocabulary. You can use it to perform subtle social maneuvers, such as using the adjective to attribute frustration to a situation rather than an individual, thereby maintaining 'kao' (face) for everyone involved. You are comfortable with its most literary and archaic forms, and you can appreciate how an author might use the word to evoke a specific era or social class. You might analyze the 'iradatashii' nature of modern digital life in a philosophical discourse, comparing it to the 'iradatashii' wait for a letter in the pre-modern era. At this level, you can also play with the word's intensity through modifiers and sentence structures, such as 'iradatashii koto kono ue nai' (nothing is more frustrating). You understand the subtle difference between 'iradatashii' and 'hagayui' in the context of tragic irony in a play. Your mastery is such that you can use the word sarcastically or ironically to downplay a major disaster or overstate a minor inconvenience for comedic effect. You are not just using the word; you are wielding it with a full understanding of its historical baggage, its phonaesthetic qualities, and its deep roots in the Japanese psyche’s relationship with time, order, and the 'prickliness' of human interaction.

Practice it Examples Notes & Tips

苛立たしい in 30 Seconds

Iradatashii means irritating or frustrating.
It is an i-adjective used for situations.
It comes from the sound 'ira-ira'.
It implies impatience and friction.

The Japanese adjective 苛立たしい (Iradatashii) is a powerful descriptor for that specific, prickly feeling of being annoyed, frustrated, or impatient when things are not progressing as quickly or as smoothly as one desires. It captures a sense of internal friction. Imagine you are stuck in a slow-moving queue while you are already late for an important meeting; that mounting pressure and the desire to snap at the person in front of you is the essence of being iradatashii. The word is deeply rooted in the onomatopoeic expression イライラ (ira-ira), which mimics the sound or feeling of something sharp or prickly rubbing against a surface. In a psychological sense, it describes the state where your nerves are on edge. Unlike simple anger (ikari), which can be explosive and outward, iradatashii often implies a lingering, repetitive source of stress that grates on your patience over time. It is frequently used to describe situations, behaviors, or even one's own inability to achieve a goal. In Japanese society, where harmony and patience are highly valued, admitting that something is iradatashii is a way to express that your threshold for endurance has been reached. It is not just about being 'mad'; it is about the 'itch' of dissatisfaction that you cannot easily scratch.

Etymological Nuance: The kanji 苛 (ka) signifies 'harsh' or 'caustic,' often used in words like 苛酷 (kakoku - harsh/severe). When paired with 立 (tatsu - to stand/arise), it literally suggests a harshness arising within the spirit.
Social Context: Used commonly in workplace venting or internal monologues to describe inefficient processes or uncooperative colleagues without necessarily being confrontational.
Emotional Intensity: It sits between 'bothersome' (mendousai) and 'enraged' (gekido). It is a mid-level intensity of frustration focusing on impatience.

返信が遅いのは本当に苛立たしいことです。(The slow reply is truly a frustrating thing.)

To understand iradatashii, one must look at the concept of time and expectation in Japanese culture. Efficiency is highly prized in many Japanese professional environments. Therefore, when a process is 'iradatashii', it usually means there is a bottleneck preventing the 'flow' (nagare). It is also used frequently in literature to describe a character's internal struggle with their own limitations. For example, a student who cannot master a piano piece despite hours of practice might feel iradatashii toward their own fingers. This internal direction of the emotion distinguishes it from words like mukatsuku, which is often more aggressive and directed externally at a person's character. Iradatashii focuses on the state of the situation causing the friction.

渋滞にはまって、苛立たしい思いをした。(I felt frustrated being stuck in a traffic jam.)

Furthermore, the word has a certain weight to it. While teenagers might use 'ira-ira' casually, iradatashii is a proper adjective (i-adjective) that fits well into written narratives and more formal spoken observations. It suggests a certain level of self-awareness—you are observing your own frustration. In the digital age, this word is frequently applied to slow internet speeds, buggy software, or long loading screens. Anything that interrupts the expected tempo of life can be described as iradatashii. It is the sound of a clock ticking while you wait for a file to download; it is the feeling of a sweater that is just a bit too tight around the neck. It is the friction of existence when reality doesn't match your pace.

彼の煮え切らない態度は苛立たしい。(His indecisive attitude is irritating.)

自分の無力さが苛立たしい。(My own helplessness is frustrating.)

解決策が見つからず、苛立たしい日々が続いた。(The days of frustration continued as no solution was found.)

Using 苛立たしい (Iradatashii) correctly requires understanding its role as an adjective that modifies nouns or acts as a predicate. Because it describes a state of being 'irritating' or 'frustrating,' it usually targets the object or situation that causes the feeling, rather than the person feeling it (though it can be used to describe one's feelings via phrases like iradatashii omoi). In basic sentences, you can simply end a sentence with it to express your current state of mind regarding a situation. For example, 'Kono osoi pasokon wa iradatashii' (This slow computer is irritating). Note how the computer is the subject being described as irritating. In more complex structures, it often modifies nouns like 'omoi' (feeling), 'kimochi' (emotion), or 'joutai' (state).

Modifying Nouns: Placed directly before a noun: 苛立たしい沈黙 (Iradatashii chinmoku - An irritating silence).
As a Predicate: Ending a sentence: 彼の言い訳は苛立たしい。(His excuses are frustrating.)
Expressing Experience: Using 'omoi o suru': 苛立たしい思いをした。(I had a frustrating experience/feeling.)

何度説明しても理解してもらえないのは、苛立たしいものです。(It is a frustrating thing not to be understood no matter how many times you explain.)

When using the past tense, iradatashii becomes iradatashikatta. This is essential for storytelling. 'Yesterday's meeting was so frustrating' would be 'Kinou no kaigi wa totemo iradatashikatta.' If you want to use it as an adverb to describe how an action is performed out of frustration, you change the final 'i' to 'ku' to get iradatashiku. For example, 'Iradatashiku tsukue o tataita' (He tapped the desk frustratingly/impatiently). This usage is very common in novels to show a character's internal state through their physical actions. It provides a more descriptive 'flavor' than simply saying someone was angry.

彼は苛立たしげに時計をチェックした。(He checked his watch impatiently/frustratedly.)

Another important variation is iradatashige, where the suffix '-ge' is added to indicate that someone 'seems' or 'looks' frustrated based on their appearance or aura. This is a more literary or formal way to describe someone else's state. 'He looked frustrated' becomes 'Kare wa iradatashige datta.' This nuance is helpful because, in Japanese culture, one often avoids stating someone else's internal emotions as absolute facts, preferring to describe how they appear. Using iradatashii in its various forms allows for a high degree of precision in describing the friction between a person's expectations and the reality they face.

騒音のせいで、苛立たしい夜を過ごした。(I spent a frustrating night because of the noise.)

窓の外の雨が苛立たしいほど長く降り続いている。(The rain outside has been falling for a frustratingly long time.)

彼女の苛立たしい表情を見て、私は口を閉ざした。(Seeing her frustrated expression, I shut my mouth.)

In everyday Japan, you will encounter 苛立たしい (Iradatashii) in several key environments. One of the most common is in the context of transportation and infrastructure. When trains are delayed (densha no chien), commuters often describe the situation or the lack of information as iradatashii. You might hear people muttering this under their breath on a crowded platform or see it used in social media posts complaining about public services. In the corporate world, the word is a staple of 'office talk.' It is used to describe cumbersome bureaucracy, vague instructions from superiors, or slow decision-making processes. A manager might say, 'Kono supiido-kan no nasa wa iradatashii' (This lack of a sense of speed is frustrating), highlighting a professional expectation that isn't being met.

News & Media: Used by commentators to describe stalled political negotiations or slow disaster relief efforts.
Literature & Manga: Characters often use it to describe romantic rivals or their own inability to express feelings.
Customer Reviews: Common in online reviews for electronics that have laggy interfaces or poor battery life.

「こんなに時間がかかるなんて、本当に苛立たしいわね。」(It's really frustrating that it's taking this much time, isn't it?)

In popular culture, particularly in Anime and Drama, iradatashii is used to build tension. A 'tsundere' character might find their own growing feelings iradatashii because they cannot control them. Or, a detective in a crime thriller might find the lack of evidence iradatashii. It provides a more sophisticated emotional palette than just being 'angry.' It suggests a struggle against an obstacle. You'll also hear it in sports commentary when a favored athlete is making unforced errors or when a team is failing to score despite many opportunities. The commentator might say, 'Fan ni tottemo iradatashii tenkai desu ne' (This is a frustrating development for the fans).

試合がなかなか動かず、観客には苛立たしい展開となった。(The game didn't move much, resulting in a frustrating development for the spectators.)

In domestic life, parents might use it when children are slow to get ready in the morning, or partners might use it when discussing a recurring argument that never gets resolved. It’s a word for the 'grind' of daily life when things don't go according to plan. Interestingly, it is also used in a self-deprecating way. Someone might say, 'Jibun no bukiyou-sa ga iradatashii' (I find my own clumsiness frustrating). This shows that the word is as much about one's internal standards as it is about external annoyances. Whenever there is a gap between 'how things should be' and 'how things are,' iradatashii is the word that fills that gap.

パスワードを忘れてログインできないのは、実に苛立たしい。(Forgetting your password and not being able to log in is truly frustrating.)

マニュアルが分かりにくくて、苛立たしい思いをした。(I felt frustrated because the manual was hard to understand.)

「あの苛立たしい音、なんとかならないの？」(Can't something be done about that irritating noise?)

One of the most frequent mistakes learners make with 苛立たしい (Iradatashii) is confusing it with the verb 苛立つ (Iradatsu). While they share the same root, their grammatical functions are different. Iradatashii is an adjective used to describe a thing or a state (e.g., 'The noise is irritating'), whereas Iradatsu is a verb that describes the action of becoming irritated (e.g., 'I am getting irritated'). You cannot say 'Watashi wa iradatashii' to mean 'I am irritated' in the same way you say 'I am happy' (Watashi wa ureshii). To express your own feeling using the adjective, you must say 'Iradatashii omoi o shite iru' (I am having a frustrating feeling) or simply use the verb 'Iradatte iru'.

Mistake: Confusing with 'Ira-ira': 'Ira-ira' is a colloquial adverb/noun. 'Iradatashii' is more formal and descriptive. Don't use 'Iradatashii suru'; use 'Ira-ira suru'.
Mistake: Misusing 'Kuyashii': 'Kuyashii' is frustration from losing or failing. 'Iradatashii' is frustration from impatience or annoyance. If you lose a race, you are 'kuyashii', not 'iradatashii'.
Mistake: Incorrect Past Tense: Learners sometimes say 'iradatashii deshita'. The correct plain past is 'iradatashikatta'.

❌ 私は苛立たしいです。(I am irritating. - *Incorrect if you mean you feel frustrated*)

Another mistake is using iradatashii when urousai (noisy/annoying) or jama (in the way) would be more appropriate. Iradatashii carries a specific nuance of 'impatience.' If someone is just talking too loud, they are urusai. If they are talking too loud while you are trying to concentrate on a deadline and their noise is making you fall behind, then the situation becomes iradatashii. It’s about the effect on your progress or peace of mind, not just the quality of the stimulus. Also, be careful with the kanji. While usually written in kana, the kanji 苛 can be confused with 荷 (cargo) or 可 (possible). Ensure you recognize the 'grass' radical on top of 苛.

✅ その状況は苛立たしい。(That situation is frustrating.)

Finally, remember that iradatashii is an 'i-adjective,' so it follows all the standard rules for that class. It cannot be used with 'na' like benri-na. Some learners try to say 'iradatashii na hito,' which is incorrect. It should be 'iradatashii hito' (an irritating person). However, calling a person iradatashii directly is quite a strong statement and can be very rude. It is often better to describe their actions as iradatashii rather than the person themselves. For example, 'Kare no yarikata wa iradatashii' (His way of doing things is frustrating) is slightly more polite than 'Kare wa iradatashii' (He is frustrating).

❌ 彼は苛立たしいな人です。(Incorrect grammar and very rude.)

✅ 彼の態度は苛立たしい。(His attitude is frustrating.)

❌ 苛立たしいした。(Incorrect past tense for an adjective.)

Japanese has a rich vocabulary for expressing negative emotions, and 苛立たしい (Iradatashii) is just one of many options. To truly master the language, you need to know when to choose a synonym. The most direct relative is もどかしい (Modokashii). While both involve frustration, modokashii specifically refers to the feeling of something being 'too slow' or 'not as one wishes,' often because of one's own inability to do something faster. It's the 'impatient' side of frustration. If you are trying to explain something but can't find the words, you feel modokashii. If someone else is taking too long to explain something, you feel iradatashii. The focus of iradatashii is more on the external irritation, while modokashii is more about the internal itch of wanting to speed things up.

腹立たしい (Haradatashii): More focused on 'anger.' It literally means 'stomach-rising' (anger rising in the belly). Use this for things that make you truly mad or indignant, like an unfair rule.
癪に障る (Shaku ni sawaru): An idiom meaning 'to get on one's nerves.' It's often used for small, petty things that someone says or does that just annoy you deeply.
煩わしい (Wazurawashii): Means 'troublesome' or 'cumbersome.' Use this for tedious paperwork or complex social obligations that you find annoying because they take up effort.

彼の無責任な態度は腹立たしい。(His irresponsible attitude is infuriating. - *Stronger than iradatashii*)

Another important comparison is with 歯がゆい (Hagayui). This word specifically describes the frustration of seeing someone else do something poorly or slowly when you know you could do it better, or seeing a situation you can't control. It literally means 'teeth-itching.' It's that specific feeling of wanting to jump in and take over. Iradatashii is broader and can apply to any source of irritation, including inanimate objects like a slow computer, whereas hagayui is almost always about a situation involving human performance or a lack of progress. If you are watching your favorite team miss easy goals, you are hagayui. If the referee's calls are bad, you are iradatashii or haradatashii.

思うように言葉が出てこなくてもどかしい。(It's frustrating/impatient because the words won't come out as I want.)

Lastly, consider 気に障る (Ki ni sawaru). This is used when someone's words or actions offend you or hurt your feelings slightly, making you annoyed. It's more about personal offense than iradatashii, which is more about the 'friction' of the situation. If a colleague makes a snide comment about your clothes, it's ki ni sawaru. If that same colleague takes three days to reply to an urgent email, it's iradatashii. By choosing the right word, you convey not just that you are 'annoyed,' but why and how you are annoyed, which is a key component of advanced Japanese communication.

隣の人の話し声が気に障る。(The neighbor's voice is getting on my nerves/offending me.)

細かい手続きが煩わしい。(The detailed procedures are bothersome/tedious.)

自分の不甲斐なさが歯がゆい。(I feel frustrated/impatient with my own cowardice/weakness.)

How Formal Is It?

Fun Fact

The 'ira' in 'iradatashii' is the same 'ira' in 'irairabou', the Japanese name for the 'electric wire' game where you must navigate a loop without touching a wire. It perfectly captures the tension and potential for sudden annoyance!

Pronunciation Guide

UK i.ɾa.da.ta.ɕiː

US i.ɾa.da.ta.ʃi

Japanese has pitch accent rather than stress. In standard Japanese, 'iradatashii' typically has a low-high-high-high-high-low pattern, though it can vary by dialect.

Rhymes With

Munashii (empty) Sabishii (lonely) Ureshii (happy) Kanashii (sad) Atarashii (new) Isogashii (busy) Tadashii (correct) Yoroshii (good)

Common Errors

Pronouncing the 'r' as an English 'r'.
Shortening the final 'ii' sound.
Misplacing the pitch accent on the second syllable.
Mumbling the 'da' and 'ta' syllables together.
Pronouncing 'shii' like 'see'.

Difficulty Rating

Reading 3/5

The kanji is complex but it is often written in hiragana.

Writing 4/5

The kanji 苛 is not a Joyo kanji for basic levels.

Speaking 2/5

Pronunciation is straightforward for an i-adjective.

Listening 2/5

The 'ira-ira' root makes it easy to recognize.

What to Learn Next

Prerequisites

怒るいらいら不便遅い待つ

Learn Next

もどかしい歯がゆい癪に障る煩わしい焦る

Advanced

忸怩たる慙愧憤慨業腹不甲斐ない

Grammar to Know

I-adjective conjugation

苛立たしい -> 苛立たしくない -> 苛立たしかった

Nominalization with 'koto'

待つのは苛立たしいことだ。

Adverbial form '~ku'

苛立たしく思う。

Appearance suffix '~ge'

苛立たしげな様子。

Cause with '~te'

遅くて苛立たしい。

Examples by Level

バスがこないのは、いらだたしいです。

The bus not coming is frustrating.

Simple adjective ending.

このペンは、いらだたしい。

This pen is frustrating (it doesn't work).

Direct description of an object.

しゅくだいがいっぱいで、いらだたしい。

There is so much homework, it's frustrating.

Using 'de' to show cause.

いらだたしいおもい。

A frustrating feeling.

Adjective modifying a noun.

あついひは、いらだたしいですね。

Hot days are frustrating, aren't they?

Adding 'ne' for agreement.

おそいパソコンはいらだたしい。

A slow computer is frustrating.

Simple noun modification.

いらだたしいおとですね。

It's an irritating sound, isn't it?

Describing a sensory experience.

ならぶのは、いらだたしい。

Lining up is frustrating.

Verb nominalized with 'no wa'.

返信が遅くて苛立たしいです。

The reply is slow and it's frustrating.

Using 'te' form for reason.

苛立たしいニュースを見ました。

I saw some frustrating news.

Adjective + Noun.

テストの結果が苛立たしい。

The test results are frustrating.

Subject + ga + Adjective.

昨日は少し苛立たしかったです。

Yesterday was a little frustrating.

Past tense 'ikadashikatta'.

苛立たしい気持ちを抑えました。

I suppressed my frustrating feelings.

Direct object of a verb.

雨が続いて苛立たしい。

The rain continues and it's frustrating.

Expressing a state.

信号がなかなか変わらず、苛立たしい。

The traffic light won't change, and it's frustrating.

Zuni form (without changing).

彼の話し方は苛立たしい。

His way of speaking is irritating.

Describing a mannerism.

自分の不手際が苛立たしい。

My own clumsiness/mistake is frustrating.

Internal frustration.

苛立たしい思いをさせたくない。

I don't want to make you feel frustrated.

Causative + 'omoi'.

渋滞のせいで、苛立たしい時間を過ごした。

Because of the traffic jam, I spent a frustrating time.

'No sei de' showing negative cause.

このマニュアルは不親切で苛立たしい。

This manual is unkind (unhelpful) and frustrating.

Compound adjectives.

苛立たしげに彼は席を立った。

He stood up from his seat appearing frustrated.

Using '-ge' for appearance.

解決策が見つからないのは苛立たしいことです。

It is a frustrating thing that a solution cannot be found.

Nominalized clause + 'koto'.

苛立たしい沈黙が続いた。

A frustrating silence continued.

Metaphorical use for atmosphere.

彼女の煮え切らない態度は苛立たしい。

Her indecisive attitude is frustrating.

Describing a character trait.

官僚的な手続きの遅さは、実に苛立たしい。

The slowness of bureaucratic procedures is truly frustrating.

Adverb 'jitsu ni' for emphasis.

苛立たしい気持ちを隠して、彼は微笑んだ。

Hiding his frustrating feelings, he smiled.

Participle phrase (hiding...).

期待していただけに、この結果は苛立たしい。

Precisely because I expected so much, this result is frustrating.

'Dake ni' showing reason/degree.

苛立たしさをぶつける相手がいない。

There is no one to vent my frustration on.

Noun form 'iradatashisa'.

彼の無神経な発言は、聞くたびに苛立たしい。

His insensitive remarks are frustrating every time I hear them.

'Tabi ni' (every time).

苛立たしく思う気持ちは分かるが、冷静になれ。

I understand the feeling of being frustrated, but stay calm.

Adverbial 'ku' + 'omou'.

このアプリのバグは非常に苛立たしい。

The bugs in this app are extremely frustrating.

Adverb 'hijou ni' for formal emphasis.

窓を叩く雨音が、今夜は妙に苛立たしい。

The sound of rain hitting the window is strangely frustrating tonight.

Adverb 'myou ni' (strangely).

理想と現実の乖離は、時として苛立たしい。

The gap between ideal and reality is sometimes frustrating.

Abstract philosophical usage.

政治の停滞に対し、国民は苛立たしい思いを抱いている。

The citizens harbor frustrating feelings toward the political stagnation.

Formal 'idaku' (to harbor).

苛立たしいほどの静寂が部屋を支配していた。

A silence so intense it was frustrating dominated the room.

'Hodo no' (to the extent of).

彼の言い回しは、真意を煙に巻くようで苛立たしい。

His phrasing is frustrating as it seems to cloud his true intentions.

Idiomatic 'kemu ni maku'.

苛立たしさが頂点に達し、彼は思わず声を荒らげた。

His frustration reached its peak, and he unintentionally raised his voice.

Noun form + 'chouten' (peak).

この不条理な状況を、苛立たしいと言わずして何と言おう。

What else can we call this absurd situation if not frustrating?

Rhetorical structure 'to iwazu shite'.

進展のない交渉に、苛立たしい色が隠せなかった。

He couldn't hide a hint of frustration at the negotiations with no progress.

Metaphorical 'iro' (color/hint).

苛立たしい日々を乗り越え、彼はようやく成功を掴んだ。

Overcoming the frustrating days, he finally grasped success.

Describing a period of life.

事態の推移をただ傍観するしかないのは、苛立たしい限りだ。

It is the height of frustration to have no choice but to merely observe the progress of events.

'Kagiri da' (the limit/height of).

言語化できないもどかしさと、理解されない苛立たしさが交錯する。

The impatience of being unable to verbalize and the frustration of not being understood intersect.

Contrasting with 'modokashisa'.

その苛立たしいまでの完璧主義が、彼を孤独に追いやった。

His frustratingly extreme perfectionism drove him into solitude.

'Made no' showing extreme degree.

伝統という名の停滞は、若者たちにとって苛立たしい鎖でしかない。

Stagnation in the name of tradition is nothing but a frustrating chain for the youth.

Metaphorical comparison.

苛立たしさを昇華させ、芸術へと変える力が必要だ。

The power to sublimate frustration and turn it into art is necessary.

'Shouka' (sublimation).

彼の饒舌さは、肝心な問いをはぐらかすためのもので、誠に苛立たしい。

His loquacity is for the purpose of evading the crucial questions, and it is truly frustrating.

Formal 'makoto ni'.

苛立たしい沈黙を破ったのは、遠くで鳴る雷鳴だった。

It was the distant thunder that broke the frustrating silence.

Literary narrative style.

この苛立たしい世の理を、彼は静かに受け入れた。

He quietly accepted the frustrating logic of this world.

'Yo no kotowari' (logic of the world).

Common Collocations

苛立たしい思い

苛立たしい沈黙

苛立たしい表情

苛立たしいニュース

苛立たしい日々

苛立たしいほど

苛立たしい限りだ

苛立たしい態度

苛立たしい音

苛立たしい展開

Common Phrases

苛立たしい思いをする

— To have a frustrating experience or feeling.

無駄な待ち時間で苛立たしい思いをした。

苛立たしい限り

— Extremely frustrating; the height of frustration.

不公平な扱いは苛立たしい限りだ。

苛立たしいほどに

— To a frustrating degree.

苛立たしいほどに時間がかかる。

苛立たしい表情を浮かべる

— To show a frustrated expression on one's face.

彼は苛立たしい表情を浮かべて黙り込んだ。

苛立たしいニュース

— News that causes frustration or annoyance.

また増税の苛立たしいニュースが流れた。

苛立たしい日々

— Days filled with frustration or impatience.

結果が出るまで苛立たしい日々を過ごした。

苛立たしい沈黙

— An awkward or annoying silence between people.

二人の間に苛立たしい沈黙が続いた。

苛立たしい態度

— A behavior that irritates others.

彼の苛立たしい態度が周囲を困らせた。

苛立たしい音

— A sound that is annoying or gets on one's nerves.

工事の苛立たしい音が一日中響いていた。

苛立たしいミス

— A frustrating mistake, often a small or repeated one.

同じ場所で苛立たしいミスを繰り返した。

Often Confused With

苛立たしい vs もどかしい

Modokashii is about speed/impatience; Iradatashii is about general irritation/friction.

苛立たしい vs 腹立たしい

Haradatashii is about anger/injustice; Iradatashii is about impatience/annoyance.

苛立たしい vs 歯がゆい

Hagayui is about seeing someone else's failure; Iradatashii is more general.

Idioms & Expressions

"苛立ちを隠せない"

— Unable to hide one's irritation.

彼は苛立ちを隠せない様子で貧乏ゆすりをした。

Neutral

"苛立ちを募らせる"

— To become increasingly frustrated.

遅々として進まない工事に、住民は苛立ちを募らせている。

Formal

"苛立ちをぶつける"

— To vent one's frustration on someone or something.

彼は苛立ちを机にぶつけた。

Neutral

"苛立ちが頂点に達する"

— For one's frustration to reach a breaking point.

彼の苛立ちが頂点に達し、ついに怒鳴り出した。

Neutral

"苛立ちを抑える"

— To suppress or hold back one's frustration.

深呼吸をして、苛立ちを抑えた。

Neutral

"苛立ちを覚える"

— To feel a sense of irritation.

彼のいい加減な返事に、苛立ちを覚えた。

Neutral

"苛立ちを解消する"

— To get rid of or resolve one's frustration.

スポーツをして、日頃の苛立ちを解消する。

Neutral

"苛立ちを見せる"

— To show signs of being irritated.

監督は選手のミスに苛立ちを見せた。

Neutral

"苛立ちを誘う"

— To provoke or invite irritation.

彼の話し方は、聞く者の苛立ちを誘う。

Neutral

"苛立ちが募る"

— Irritation grows or intensifies.

渋滞がひどくなるにつれ、苛立ちが募った。

Neutral

Easily Confused

苛立たしい vs 苛立つ

Same root.

Iradatsu is a verb (to get irritated); Iradatashii is an adjective (is irritating).

私は苛立っている (I am irritated) vs これは苛立たしい (This is irritating).

苛立たしい vs 煩わしい

Both mean annoying.

Wazurawashii is about being 'troublesome' or 'too much work'. Iradatashii is about 'impatience'.

手続きが煩わしい (The procedure is troublesome).

苛立たしい vs 悔しい

Both are negative emotions.

Kuyashii is the frustration of losing or failing. Iradatashii is the frustration of waiting or being annoyed.

負けて悔しい (I'm frustrated because I lost).

苛立たしい vs うざい

Both mean annoying.

Uzai is very informal/slang and often targets a person. Iradatashii is more formal and targets a situation.

あいつ、うざい (That guy is annoying).

苛立たしい vs 騒がしい

Similar sound.

Sawagashii means noisy or boisterous. Iradatashii means frustrating.

外が騒がしい (It's noisy outside).

Sentence Patterns

[Noun] wa iradatashii desu.

Basu wa iradatashii desu.

[Verb-te] iradatashii desu.

Osokute iradatashii desu.

Iradatashii [Noun] da.

Iradatashii omoi da.

Iradatashiku [Verb].

Iradatashiku kaita.

[Noun] wa iradatashii kagiri da.

Kono chien wa iradatashii kagiri da.

Iradatashige ni [Verb].

Iradatashige ni mita.

Iradatashii hodo no [Noun].

Iradatashii hodo no shizukesa.

Iradatashisa o [Verb].

Iradatashisa o shouka saseru.

Word Family

Nouns

苛立ち (Iradachi - Irritation)

苛立たしさ (Iradatashisa - Frustratingness)

Verbs

苛立つ (Iradatsu - To get irritated)

苛立たせる (Iradataseru - To make someone irritated)

Adjectives

苛立たしい (Iradatashii - Irritating)

イライラ (Ira-ira)

苛苛 (Ira-ira)

苛酷 (Kakoku)

苛烈 (Karetsu)

苛める (Ijimeru - though etymologically distinct, often associated)

How to Use It

frequency

Common in both spoken and written Japanese, especially in critiques and storytelling.

Common Mistakes

私は苛立たしいです。 → 私は苛立っています。
You cannot use 'iradatashii' to mean 'I am in a state of feeling irritated' directly like an English adjective. Use the verb 'iradatsu' for your own state.
苛立たしいな人 → 苛立たしい人
'Iradatashii' is an i-adjective, so it doesn't need 'na' to modify a noun.
苛立たしいでした。 → 苛立たしかったです。
The past tense of i-adjectives is formed by changing 'i' to 'katta'.
苛立たしいする → いらいらする
You cannot use 'iradatashii' with 'suru'. Use the onomatopoeia 'ira-ira' instead.
苛立たしいに言う → 苛立たしく言う
To use it as an adverb, change the final 'i' to 'ku'.

Tips

Past Tense Check

Always remember that the past tense of 'iradatashii' is 'iradatashikatta'. Never say 'iradatashii deshita' in plain form.

Situation vs. Person

Try to describe the *situation* as 'iradatashii' rather than the *person*. This sounds more objective and less like a personal attack.

The 'Ira' Root

Think of 'ira' as a thorn. Anything that 'pricks' your patience is 'iradatashii'.

Using '-ge'

In stories, use 'iradatashige' to describe how a character looks. It adds a professional, literary touch to your Japanese.

Catch the Sigh

Native speakers often sigh before saying 'iradatashii'. Use this contextual clue to anticipate the word.

Empathy Building

Saying 'iradatashii desu ne' is a great way to bond with a Japanese colleague over shared workplace frustrations.

Kanji Meaning

The kanji 苛 (harsh) + 立 (stand) = harshness standing up. Use this visual to remember the meaning.

Pair with 'Omoi'

The phrase 'iradatashii omoi o suru' is a very common way to express that you had a frustrating experience.

Ira-ira vs Iradatashii

On social media, use 'ira-ira' for quick posts and 'iradatashii' for longer, more descriptive complaints.

Long 'ii'

Make sure to hold the final 'i' long enough. If it's too short, it might sound like a different word or incomplete.

Memorize It

Mnemonic

Imagine an 'Ira' (a person's name) who is constantly 'Da-ta' (tapping) her feet because she is 'shii' (seeing) a slow line. Iradatashii!

Visual Association

Imagine a person standing on top of a giant cactus (thorns/ira). The feeling of standing (tatsu) on those thorns is 'iradatashii'.

Word Web

Irritation Impatience Thorns Ira-ira Frustration Slow Friction Restless

Challenge

Try to identify three things today that make you feel 'iradatashii' and say them out loud in Japanese.

Word Origin

The word comes from the verb 'iradatsu', which is a combination of 'ira' (thorn/prickle) and 'tatsu' (to stand up/arise). It literally means 'thorns standing up' within one's mind.

Original meaning: To feel as if one is being pricked by thorns; to be restless or impatient.

Japonic / Old Japanese roots.

Cultural Context

Avoid using it to describe a superior's actions directly to their face.

English speakers might use 'frustrating' or 'annoying' more freely than Japanese speakers use 'iradatashii'.

Commonly used in Natsume Soseki's novels to describe the 'modern' man's restlessness. Frequent in 'salaryman' manga like 'Kacho Kosaku Shima' regarding workplace politics. Often used in lyrics of J-Pop songs about unrequited love or life struggles.

Practice in Real Life

Real-World Contexts

Traffic & Transit

渋滞が苛立たしい
電車が来なくて苛立たしい
信号待ちが苛立たしい
乗り換えが苛立たしい

Technology

ネットが遅くて苛立たしい
バグが多くて苛立たしい
操作が苛立たしい
読み込みが苛立たしい

Workplace

手続きが苛立たしい
会議が長くて苛立たしい
上司の指示が苛立たしい
返信がなくて苛立たしい

Self-Reflection

自分の無力が苛立たしい
物覚えが悪くて苛立たしい
失敗が苛立たしい
勇気がないのが苛立たしい

Social/Interpersonal

彼の態度が苛立たしい
沈黙が苛立たしい
言い訳が苛立たしい
嘘が苛立たしい

Conversation Starters

"最近、何か苛立たしいことはありましたか？ (Has anything frustrating happened lately?)"

"パソコンが重い時って、本当に苛立たしいですよね。 (It's really frustrating when a computer is slow, isn't it?)"

"苛立たしい思いをした時、どうやってリラックスしますか？ (How do you relax when you've had a frustrating experience?)"

"どんな人の態度が一番苛立たしいと感じますか？ (What kind of person's attitude do you find most irritating?)"

"この街の交通渋滞は苛立たしいと思いませんか？ (Don't you think the traffic in this city is frustrating?)"

Journal Prompts

今日一番苛立たしいと感じた瞬間について書いてください。 (Write about the most frustrating moment you had today.)

自分が苛立たしいと感じる状況を3つ挙げ、その理由を説明してください。 (List three situations you find frustrating and explain why.)

苛立たしい気持ちをどのようにコントロールしていますか？ (How do you control your frustrating feelings?)

10年前と比べて、世の中は苛立たしいことが増えたと思いますか？ (Do you think there are more frustrating things in the world compared to 10 years ago?)

「苛立たしい」という言葉を使って、短い物語を作ってください。 (Create a short story using the word 'iradatashii'.)

Frequently Asked Questions

10 questions

Yes, but it's very strong. It's better to say 'his attitude is iradatashii' rather than 'he is iradatashii' to be slightly more polite.

'Ira-ira' is an onomatopoeia used with 'suru' (to do). 'Iradatashii' is an adjective used to describe something. 'Ira-ira' is more common in speech.

Yes, to describe a situation or a process that is inefficient. However, don't use it to describe a person's behavior if you want to remain polite.

You should use 'iradatashikatta' (adjective past) or 'iradatta' (verb past). For example: 'Kinou wa iradatashikatta desu'.

Words like 'kokochiyoi' (pleasant) or 'ureshii' (happy) or 'sukkiri' (refreshed) are opposites depending on the context.

Not always, but very often. It can also imply frustration with a lack of progress or a recurring problem.

No, 'iyana nioi' or 'fukaina nioi' is better. 'Iradatashii' is more about mental friction/impatience.

Yes, 苛 is not a basic level kanji. Most people recognize it but might not write it by hand often.

No, it is an 'i-adjective'. It ends in 'shii'.

Yes, 'jibun ni iradatashii' (I'm frustrated with myself) is a common expression.