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違いない (ちがいない) Japanese meaning | Kotomora
Common word JLPT N3 Conjugation Meanings 1
expression, i-adjective
certain ; sure ; without doubt ; there is no mistaking it
Expresses the speaker's strong certainty or inference. Most often used as に違いない after a noun, adjective, or clause, meaning “must be” or “there is no doubt that ...”.
に
着つ
い
て
いる
に
違ちが
い
ない
。
He must have arrived home by now.
Written forms 違ちが いない
Standard mixed kanji-kana spelling; common both as a predicate and in the pattern に違いない.
違ちが い 無な い
Kanji-heavy variant using 無い; understandable but less typical in ordinary writing than 違いない.
Kanji 無 nothingness, none, ain't Similar words 間ま 違ちが いない Also means “there is no mistake” or “certain”; it is often used as a more standalone colloquial assertion, while 違いない is especially common in the grammatical pattern に違いない.
きっと An adverb meaning “surely” or “probably”; it can sound more like expectation or prediction, whereas に違いない states a stronger conclusion.
相そう 違い ない A formal or written equivalent meaning “there is no discrepancy/doubt”; 違いない is more ordinary in everyday Japanese.
Etymology Composed transparently from 違い, “difference; mistake,” plus ない, “not exist,” giving the idea that there is no mistake or no room for a different conclusion. This is a semantic explanation, not a claim about a separate historical origin.
