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あっという間 (attoiuma) Japanese meaning: an instant | Kotomora
あっという 間ま also: あっとゆうま · あっとゆーま
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やす
み
が
終お
わっ
た
。
Summer vacation was over in the blink of an eye.
He solved the problem in no time at all.
Related words 一瞬 is a formal, neutral noun for 'an instant', while あっという間 is colloquial and often used as あっという間に to describe time passing quickly.
瞬く間 conveys the same 'in a flash' meaning as あっという間 but has a more literary, writing-oriented feel and is less common in casual speech.
Written forms あっという 間ま
Standard kanji-kana mixed spelling; the most common written form.
あっと 言い う 間ま
Variant with 言う in kanji; less common but still encountered.
Etymology From あっ (exclamation of surprise) + と言う (to say) + 間 (interval, time). Literally 'the time it takes to say ah!'.
