How to say "abruptly" in Japanese

Choosing the right word
  • いきなりJLPT N2approx.Common
    adverb, no-adjectiveDescribes an action that begins with no lead-up or preliminary steps, going straight to the surprising part. Typical when someone suddenly asks a personal question or leaves without a word.
    そのタクシーはいきなり左ひだりに曲まがった。↗
    The taxi abruptly turned left.
  • adverbDescribes something changing suddenly and unexpectedly, often a situation or condition such as the weather turning; for a person abruptly starting to do something, 急に or いきなり fits better.
    にわかに雨あめが降ふってきた。↗
    Suddenly, the rain fell.
  • 不意にふいにCommon
    adverbEmphasizes that something happens unexpectedly, catching a person off guard. Typical when you are suddenly called by name, visited, or asked something you had no way to anticipate.
    彼かれはふいに私わたしたちの話はなしに口くちをはさんだ。↗
    He interrupted us abruptly.
  • 急にきゅうにJLPT N3approx.Common
    adverbThe most general choice: any change that happens suddenly, whether the weather, someone's mood, or the pace of things. When unsure which word fits, this is the safe default.
    He changed his attitude suddenly.

Use 「急に」 for the neutral, all-purpose 'suddenly', 「いきなり」 when an action comes with no lead-up or warning, 「不意に」 when it catches someone off guard, and 「にわかに」 for a situation changing abruptly.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

Japanese equivalents
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JLPT vocabulary levels are community estimates, not official (no official lists have been published since the 2010 revision).

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