Translation guide
The English word 'lack' expresses the absence or insufficiency of something. In Japanese, this concept is most commonly conveyed using verbs like ない (not exist/have) or 足りない (insufficient), rather than a single direct noun equivalent. The choice depends on whether you are stating the absence of something, expressing a shortage, or describing a deficiency in quality.
To state that something does not exist or is not present; to say that someone does not have something.
The most basic and common way to express lack of something. が marks the thing that is lacking. Use with nouns.
He lacks experience.
This room lacks a window.
Literally 'do not possess'. Emphasizes the subject's lack of possession. More formal or explicit than ～がない.
She lacks a driver's license.
A formal noun meaning 'lack' or 'deficiency'. Often used in written or technical contexts.
A lack of communication is the problem.
To express that there is not enough of something; a quantity or degree that is less than needed.
An i-adjective meaning 'insufficient' or 'not enough'. Very common in daily conversation.
I lack money. / I don't have enough money.
I lacked time and couldn't finish.
A noun/suru-verb meaning 'shortage' or 'insufficiency'. Slightly more formal than 足りない. Often used in compounds like 人手不足 (labor shortage).
A formal noun meaning 'scarcity' or 'dearth'. Used for serious shortages, often in medical or economic contexts.
To describe a person or thing as missing a certain quality, skill, or characteristic.
A verb meaning 'to be lacking in (a quality)'. Used for abstract traits like common sense, personality, etc.
He lacks common sense.
The plan lacks concreteness.
Simply stating the absence of a quality. Often used with nouns like 魅力 (charm) or やる気 (motivation).
Use ～がない for simple absence (no windows). Use 足りない for insufficient quantity (not enough money). Use ～に欠ける for lacking an abstract quality (lacking common sense).
English often uses 'lack of + noun'. Japanese rarely uses a single noun equivalent in casual speech. Instead, rephrase using verbs/adjectives like ない or 足りない. For example, 'lack of sleep' becomes 睡眠不足 or 寝不足, not a literal translation.
I'm tired from lack of sleep.
This region suffers from a lack of water.
ビタミン欠乏症
vitamin deficiency
That shop lacks appeal.