いつの間にか (Itsunomanika) is a Japanese adverb meaning “before one knows, before one becomes aware of, unnoticed, unawares”.
Meanings
- adverbbefore one knows; before one becomes aware of; unnoticed; unawares
Examples
何時の間にか暗くなった。
It became dark before I knew it.
いつのまにか夏も過ぎてしまった。
Summer has gone all too soon.
いつの間にかボブは外へ出ていた。
Bob went out before I knew it.
Sentences from Tatoeba (CC BY 2.0 FR).