可能な

The Japanese term 可能な (kanō-na) is a foundational piece of vocabulary for anyone moving beyond basic conversational Japanese into professional, academic, or formal environments. At its core, it translates to "possible," "feasible," or "practicable." While the word 可能かのう (kanō) is technically a noun (specifically a na-adjective or adjectival noun), it is most frequently encountered in its attributive form with the particle な (na) to describe nouns, or used as a predicate with the copula だ (da) or です (desu). Understanding this word requires looking at its kanji: 可か meaning "permit" or "passable," and 能のう meaning "ability" or "function." Together, they describe a state where a function can be permitted or realized in reality.

The Logical Nuance

Unlike the verb 出来るできる (dekiru), which often refers to a person's individual ability or a general "can do" state, kanō focuses on the objective possibility of an event or task. It is used to discuss whether a plan is realistic, whether a feature is available in a piece of software, or whether a goal is theoretically reachable given certain conditions.

Professional Contexts

In business Japanese (Keigo environments), kanō is indispensable. You will hear it in phrases like 対応可能たいおうかのう (capable of handling/responding) or 実現可能じつげんかのう (feasible). It sounds much more objective and professional than saying "we can do it" (dekimasu).

When you use 可能な, you are appealing to logic and evidence. If a scientist says a reaction is kanō, they mean the laws of physics allow it. If a project manager says a deadline is kanō, they mean the resources are available. It is the language of assessment and evaluation. You will often see it paired with 限りかぎり (kagiri) to form the common expression 可能な限りかのうなかぎり, meaning "as much as possible" or "to the extent possible." This is a staple of polite requests and personal commitments.

In summary, 可能な is your go-to word for discussing feasibility. It bridges the gap between simple everyday Japanese and the sophisticated, precise language required for higher-level communication. Whether you are discussing technical specifications, negotiating a contract, or simply expressing a hope that something can be done, kanō provides the necessary weight and clarity.

Using 可能な correctly requires understanding its role as a na-adjective. This means it follows specific grammatical patterns depending on whether it is modifying a noun or acting as the main predicate of the sentence. Let's break down the most common structures you will encounter in both written and spoken Japanese.

Pattern 1: [Noun] + は + [可能] + です/だ

This is the simplest way to state that something is possible. Note that when used at the end of a sentence, the "な" is dropped.
Example: 実現じつげんは可能かのうです。(Realization/Implementation is possible.)

Pattern 2: [可能な] + [Noun]

When modifying a noun directly, you must include the "な".
Example: 可能かのうな方法ほうほうを探しましょう。(Let's look for a possible method.)

Pattern 3: [Verb Dictionary Form] + こと + は + 可能だ

To say an action is possible, nominalize the verb using ことkoto.
Example: 今日中に終おわらせることは可能かのうだ。(Finishing it by today is possible.)

One of the most powerful uses of kanō is in compound nouns. By attaching 可能かのう to the end of a Sino-Japanese noun (Suru-verb stem), you create a new adjective meaning "X-able." For example, 再生さいせい (regeneration/playback) becomes 再生可能さいせいかのう (renewable/playable). This is extremely common in news reports and technical manuals.

Finally, when you want to express the degree of possibility, you can use the noun form 可能性かのうせい (possibility/probability). While kanō-na is binary (it is or isn't possible), kanōsei allows for nuances like "high possibility" (可能性が高いかのうせいがたかい) or "low possibility" (可能性が低いかのうせいがひくい). Mastering these variations will make your Japanese sound nuanced and precise.

If you were to step into a Japanese office, open a technical manual, or watch a news broadcast, 可能な and its variants would be everywhere. It is a workhorse of the Japanese language that signals objectivity and professional distance. Let's look at the specific domains where you will encounter this word most frequently.

Technology and Software

In the world of IT, kanō is used to describe features and compatibility. You will see buttons labeled 編集可能へんしゅうかのう (editable) or 選択可能せんたくかのう (selectable). When a system is down, a technician might say 復旧は可能ですふっきゅうはかのうです (restoration is possible).

News and Media

News anchors use kanō to discuss political feasibility or scientific breakthroughs. For example, 有人火星探査は可能かゆうじんかせいたんさはかのうか (Is manned Mars exploration possible?). It provides a level of journalistic neutrality.

Business Meetings

When negotiating deadlines, Japanese professionals often use kanō to avoid the directness of "I can." By saying 来週なら可能ですらいしゅうならかのうです (If it's next week, it's possible), the focus is placed on the schedule rather than the person's will.

In academic writing, kanō is the standard way to discuss hypotheses. Researchers will write about 観測可能なデータかんそくかのうなでーた (observable data) or whether a certain outcome is 理論上可能りろんじょうかのう (theoretically possible). It strips away the subjectivity that personal verbs like "can" might imply, making the writing sound more authoritative and evidence-based.

Even in casual settings, you might hear a friend say 無理じゃない？むりじゃない？ (Isn't it impossible?) or いけるよ！いけるよ！ (You can do it!). While kanō is rarer in high-school hallways, it is the bread and butter of adult life in Japan. Understanding where it fits—and where it doesn't—is a key marker of your linguistic maturity.

While 可能な is a straightforward word, English speakers often trip up on its usage due to the differences between Japanese and English grammar and social norms. Here are the most frequent pitfalls to avoid.

Mistake 1: Using "Kanō" for Personal Ability

English speakers often want to say "I am possible to speak Japanese." In Japanese, you cannot say 私は日本語が可能ですWatashi wa nihongo ga kanō desu to mean you can speak it. Instead, use 話せますhanasemasu or 話すことができますhanasu koto ga dekimasu. Kanō describes the task, not the person.

Mistake 2: Forgetting "Na" When Modifying Nouns

Because 可能かのう is a na-adjective, saying 可能方法kanō hōhō is incorrect. It must be 可能な方法kanō-na hōhō. Conversely, don't use "na" at the end of a sentence: それは可能ですなSore wa kanō desu na sounds like an old man or a very specific dialectal quirk, not standard Japanese.

Mistake 3: Confusing "Kanō" with "Ariuru"

あり得るariuru means something "could happen" (logical possibility of an event). Kanō means something "can be done" (feasibility of an action). If you say a typhoon is kanō, it sounds like you are planning to make a typhoon happen!

Another common error is using kanō when you actually mean "allowed." In English, "Is it possible to smoke here?" is common. In Japanese, using kanō would sound like you are asking if it is physically possible for smoke to exist in this room. Instead, use 〜てもいいですか？...te mo ii desu ka? (is it okay?) or 許可されていますか？kyoka sarete imasu ka? (is it permitted?).

Finally, be careful with the intensity. Kanō is quite clinical. If you want to say something is "totally possible!" in a supportive way to a friend, 絶対できるよ！Zettai dekiru yo! is much better than 絶対可能ですZettai kanō desu, which sounds like a robot giving a probability estimate.

Japanese has several ways to express the concept of "can" or "possible," and choosing the right one depends entirely on the context and the level of formality you wish to convey. Here is a breakdown of synonyms for 可能な and how they differ.

1. できる (Dekiru)

The most common way to say "can." It is a verb and is used for personal abilities, permissions, and general possibility.
Vs. Kanō: Dekiru is conversational and personal; Kanō is formal and objective.

2. あり得る (Ariuru / Arieru)

Translates to "could happen" or "is possible to exist."
Vs. Kanō: Use Ariuru for occurrences (like an accident being possible); use Kanō for actions (like a plan being possible to execute).

3. 無理ではない (Muri de wa nai)

Literally "it's not impossible." This is a double negative used to show cautious optimism.
Vs. Kanō: Kanō is a positive statement; Muri de wa nai suggests it might be difficult but isn't out of the question.

4. 実現可能な (Jitsugen kanō-na)

Specifically means "feasible" or "realizable."
Usage: Often used in business proposals to describe a project that can actually be completed.

In formal documents, you might also see 可否kahi (possibility/propriety), which literally means "yes or no" or "possible or not." For example, 参加の可否を教えてくださいSanka no kahi o oshiete kudasai means "Please let us know whether you can attend or not." This is even more formal than using kanō.

Finally, for something that is "practicable" or "workable," the word 実行可能じっこうかのう is the best fit. It implies that you have the tools and the plan ready to go. By learning these distinctions, you move from just "getting by" in Japanese to speaking with the precision of a native professional.