いつの間にか

itsu no ma ni ka
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Translating...
before one knew it, without noticing
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/itsɯnomaɲiꜜka/
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A change found to have happened without noticing when it occurred.
Practice using いつの間にか in conversation until it feels natural

Examples

  • 話しているうちにいつの間にか夜になった。
    As we talked, night fell before we knew it.
  • 本を読んでいるうちに、いつの間にか眠っていた。
    While reading, I fell asleep without noticing.
  • 子どもはいつの間にか大きくなった。
    Before we knew it, the child had grown.
  • いつの間にか雨がやんでいた。
    Before I knew it, the rain had stopped.
  • いつの間にか彼の名前を覚えていた。
    Without realizing it, I had learned his name.

Similar words

気づかないうちに
いつしか
知らないうちに

Meanings

Before anyone noticed

time
neutral
Says that a change or event has already happened, although no one noticed exactly when.

Examples

  • いつの間にか雨がやんでいた。
    Before I knew it, the rain had stopped.
  • 子どもはいつの間にか大きくなった。
    Before we knew it, the child had grown.
  • 本を読んでいるうちに、いつの間にか眠っていた。
    While reading, I fell asleep without noticing.
  • 話しているうちにいつの間にか夜になった。
    As we talked, night fell before we knew it.
  • いつの間にか彼の名前を覚えていた。
    Without realizing it, I had learned his name.

Similar words

知らないうちに
気づかないうちに
いつしか

Etymology

Literally “at some unknown point in the interval”: いつ means “when”, 間に means “during”, and か leaves the time unspecified.

FAQ

What does いつの間にか mean?

It means that something happened before anyone noticed when.

How do you read いつの間にか?

It is read いつのまにか, romanized itsu no ma ni ka.

Does いつの間にか refer to a known time?

No. The exact time is unknown or went unnoticed.

Can いつの間にか describe gradual change?

Yes, such as a child growing up unnoticed.

Is いつの間にか used for an event already completed?

Often yes. A speaker notices the result after the event has happened.

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