落とす

The Japanese verb 落とす (otosu) is a multifaceted transitive verb that primarily describes the action of causing something to move from a higher position to a lower one, or more broadly, the act of losing, removing, or failing something. In its most literal sense, it is the transitive counterpart to the intransitive verb 落ちる (ochiru). While ochiru means 'to fall' (something falls on its own), otosu means 'to drop' (someone drops something). This distinction is fundamental to Japanese grammar and is one of the first major hurdles for learners moving into the A2 and B1 levels. The physical act of dropping can be intentional, such as dropping a coin into a vending machine, or accidental, such as dropping your smartphone on the pavement. However, the semantic range of otosu extends far beyond simple gravity-defying actions. It encompasses the removal of substances, such as washing off dirt or removing makeup, where the 'dropping' refers to the separation of the unwanted material from the surface. Furthermore, it is used in competitive and academic contexts, such as failing an exam or losing a game, where the 'drop' signifies a decline in status or a failure to meet a threshold. In the digital age, it has also found a home in technology, referring to the act of downloading files or 'dropping' data into a folder. Understanding otosu requires a grasp of its core concept: the intentional or unintentional displacement of an object or state from its current position to a lower or 'removed' state.

Physical Displacement

The act of letting an object fall from one's hand or a surface to the ground.

Removal of Surface Matter

Using cleaning agents or physical force to take off dirt, stains, or cosmetics.

Loss of Possession

Accidentally leaving an item behind or losing it while in transit.

Abstract Usage

Lowering quality, speed, or reputation.

Military/Competitive Usage

Capturing a stronghold or defeating an opponent's defense.

Omission

Accidentally or intentionally leaving out a name or detail from a list.

Using 落とす (otosu) correctly involves understanding its conjugation as a Godan (u-verb) and its relationship with the particle を (wo). Because it is a transitive verb, it always describes an action that an agent (the subject) does to an object. For example, 'Tanaka-san dropped the glass' would be 'Tanaka-san ga glass wo otoshita.' In contrast, the intransitive 'The glass fell' would be 'Glass ga ochita.' This distinction is vital for clear communication. In terms of conjugation, otosu follows the standard pattern for verbs ending in -su: otoshimasu (polite), otosanai (negative), otoshite (te-form), and otoseba (conditional). The te-form otoshite is frequently used in requests, such as 'Speed wo otoshite kudasai' (Please slow down). Another common grammatical construction involves the potential form otoseru, meaning 'can drop' or 'can remove.' This is often used in commercials for cleaning products: 'Shitsukoi yogore mo otoseru' (Can even remove stubborn stains). Furthermore, the causative form otosaseru (to make someone drop) and the passive form otosareru (to have something dropped or to be failed by someone) appear in more complex narrative contexts. Beyond simple grammar, the verb is often paired with specific nouns to form set phrases. For instance, inochi wo otosu (to lose one's life) is a formal and somewhat literary way to describe someone's passing, particularly in accidents or battles. Kata wo otosu (to drop one's shoulders) is a common idiomatic expression meaning to be dejected or disappointed. When using otosu in a digital context, it functions similarly to 'download' (down-rodo suru), though otosu is more colloquial. For example, 'Sono fairu wo otoshite oite' (Download that file for me). In social settings, otosu can also mean 'to win someone over' or 'to seduce,' implying that the person's defenses have been 'dropped' or 'captured.' This wide range of usage makes it one of the most versatile verbs in the Japanese language, requiring learners to pay close attention to the nouns it modifies to determine the specific nuance intended.

Conjugation Table

Dictionary: 落とす (otosu), Polite: 落とします (otoshimasu), Te-form: 落として (otoshite), Negative: 落とさない (otosanai), Past: 落とした (otoshita).

You will encounter 落とす (otosu) in a vast array of daily situations in Japan. One of the most common places is in public transportation. Train stations frequently play announcements warning passengers about otoshimono (lost property). If you drop your phone on the tracks, the staff will use the verb otosu to describe the incident. In the world of beauty and skincare, otosu is the standard verb for removing makeup. You will see it on the packaging of cleansing oils and face washes: 'Makeup wo sukkiri otosu' (Completely remove makeup). In a culinary context, if you are cooking and a recipe tells you to 'aku wo otosu,' it means to skim off the foam or impurities from a boiling broth. At school or work, the verb is used in the context of exams and grades. A student might lament, 'Tan-i wo otoshita' (I failed to get the credits/failed the course). In a business meeting, someone might suggest 'Cost wo otosu' (To reduce costs). In sports, particularly racing or ball games, you'll hear it regarding speed or losing points. For example, a coach might yell 'Speed wo otosu na!' (Don't slow down!). In more dramatic settings like historical dramas (Jidaigeki) or anime, you will hear otosu used in the sense of capturing a fortress or a castle: 'Ashita made ni shiro wo otosu' (We will take the castle by tomorrow). It is also used in the context of technology; gamers might talk about 'dropping' a boss (defeating them) or 'dropping' loot. Even in casual conversation, if someone is looking sad, a friend might say, 'Nande sonna ni kata wo otoshite iru no?' (Why are you looking so dejected/dropping your shoulders?). This ubiquity across physical, professional, and emotional domains makes it a cornerstone of Japanese vocabulary.

The most frequent mistake learners make with 落とす (otosu) is confusing it with its intransitive partner 落ちる (ochiru). This is a classic transitive/intransitive pair error. Remember: otosu is something YOU do (or something/someone does), while ochiru is something that happens on its own. If you say 'Saifu ga otoshita,' it sounds like the wallet itself performed the action of dropping something, which is nonsensical. The correct form for 'The wallet fell' is 'Saifu ga ochita,' and for 'I dropped the wallet,' it is 'Saifu wo otoshita.' Another common error is using otosu when 忘れる (wasureru - to forget) or なくす (nakusu - to lose) is more appropriate. While otosu can mean 'to lose' in the sense of dropping something and not realizing it, nakusu is a broader term for losing possession of something, and wasureru is for leaving something behind. If you left your umbrella at home, you didn't 'otosu' it; you 'wasureta' it. If you dropped it somewhere on the street and don't know where, 'otosu' is correct. Furthermore, learners sometimes struggle with the nuance of 'failing.' In Japanese, you 'otosu' an exam or a credit (tan-i), but you 'ochiru' (fall/fail) at the entrance exam (juken ni ochiru). Using otosu for the entrance exam itself can sound slightly unnatural depending on the phrasing. Additionally, in the context of 'dropping' someone off in a car, otosu is not used; instead, you use 降ろす (orosu). Confusing otosu (to drop) with orosu (to let someone out of a vehicle) is a common phonetic and conceptual mistake for beginners. Finally, avoid using otosu to mean 'to lower' in all contexts; while it works for speed or quality, for lowering a physical object like a hand or a flag, 下げる (sageru) is the standard choice.

Several words share semantic space with 落とす (otosu), and distinguishing them is key to advanced proficiency. First, 失う (ushinau) and なくす (nakusu) both mean 'to lose.' Ushinau is more formal and often used for abstract things like hope, confidence, or lives. Nakusu is the general word for losing physical objects or abstract qualities. Otosu specifically implies the physical act of dropping led to the loss. Second, 下げる (sageru) means 'to lower.' While otosu can mean lowering speed or quality, sageru is used for lowering physical height (like a hand), prices, or levels. Third, 捨てる (suteru) means 'to throw away.' While both involve letting go of an object, suteru is intentional disposal, whereas otosu is often accidental or involves removal (like dirt). Fourth, 漏らす (morasu) means 'to omit' or 'to leak.' When otosu is used for omission (like leaving a name off a list), it is often synonymous with nukasu or morasu, but otosu suggests a failure in the process of recording. Fifth, 減らす (herasu) means 'to reduce.' When reducing speed or weight, otosu and herasu can sometimes be used interchangeably, but otosu often implies a more significant or sudden drop. Lastly, 降ろす (orosu), as mentioned before, is specifically for unloading cargo or letting people out of a vehicle. Understanding these nuances helps in choosing the most precise word for the situation.