How to say "sufficiently" in Japanese

• 十分じゅうぶんJLPT N4approx.Common
  adverbCovers the core sense of 'sufficiently' — enough in amount, degree, or quality. It is the neutral, default choice in most contexts, whether talking about time, money, preparation, or explanation.
  「もっと召し上めしあがりますか」「いいえ、じゅうぶんいただきました」↗

  "Would you like any more?" "No, I've had enough."
• ゆっくりJLPT N5approx.Common
  adverbSeldom the word for plain 'sufficiently'; it really means slowly, leisurely, or without rushing, with 'sufficiently' appearing only in the sense of having ample, unhurried time. Choose it when the nuance is taking one's time.
• がっつりCommon
  adverb (with と)A colloquial mimetic word for doing something heartily or fully, especially eating a substantial amount or getting a solid payoff. It suits casual talk about hearty meals or big gains, not neutral statements of sufficiency.
• バッチリCommon
  adverb (with と)A colloquial mimetic word meaning something is done perfectly or completely — preparations, results, or appearances exactly as they should be. It is a poor choice for mere sufficiency; the nuance is 'just right', not simply 'enough'.
  彼女かのじょにばっちりキスされちゃったよ。↗

  She kissed me full on the lips.

Use 十分 for the plain, all-purpose sense of 'sufficiently'; the other three are colloquial or mimetic words covering specific flavors: unhurried timing (「ゆっくり」), hearty fullness (「がっつり」), or things going perfectly (「バッチリ」).

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

• 遺憾なくいかんなくfully
• ちゃんとsufficiently
• 十分じゅうぶんsufficiently
• しっかりproperly
• ゆっくりeasily (e.g. in time)
• がっつりproperly
• ばっちりenough
• ばっちしenough
• 普通にふつうにby anyone's standards
• びっしり(work) sufficiently