How to say "perfectly" in Japanese

Choosing the right word
  • adverb (with と)Covers the colloquial 'perfectly' of things going just right — an answer that is spot on, a plan that worked without a hitch. Onomatopoeic, and at home in casual conversation.
  • まったくJLPT N3approx.Common
    adverb, no-adjectiveMatches 'perfectly' only in the degree sense of 'completely, entirely'. It is really the word for 'totally' or 'truly', not for describing work done flawlessly.
    彼かれの意見いけんは我々われわれの意見いけんとはまったく違ちがっている。↗
    His opinion is quite different from ours.
  • きちっとJLPT N1approx.Common
    adverb, suru verbCovers 'perfectly' in the sense of 'exactly' — something done neatly and precisely, with every part in place. An onomatopoeic word for careful, exact handling.
  • adverb, suffixCovers 'perfectly' as 'exactly right' — a size, amount or timing that is precisely on target, neither more nor less. Think of the English 'just right'.
    時計とけいを確認かくにんすると、21時じジャスト。↗
    Checking the clock it was exactly 21:00.
  • ちゃんとJLPT N3approx.Common
    adverb, suru verbCovers 'perfectly' in the sense of 'properly' — done as it should be, without sloppiness, and in good order. A common onomatopoeic word for doing a thing right.
    この道具どうぐはちゃんと使つかえばとても役やくに立たつ。↗
    If it is used properly, this tool will be a great help.

Choose by sense: 「バッチリ」 for colloquial 'spot on', 「まったく」 for 'perfectly' meaning 'completely', 「きちっと」 for precise and neat, 「ジャスト」 for 'exactly right' in fit or timing, and 「ちゃんと」 for 'properly' done.

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

Japanese equivalents
See also

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

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