How to say "comfortably" in Japanese

• のびのびCommon
  adverb (with と), suru verbCovers "comfortably" as a relaxed, carefree state of mind or body — feeling free and at ease. Typical of living, growing, or acting without stress or constraint.
  子こどもはのびのび育そだつべきだ。↗

  Children should grow up carefree.
• 楽々らくらくCommon
  adverb (with と)The word for "comfortably" meaning "with ease, without effort or difficulty" — getting something done smoothly and without strain, as in handling a task comfortably.
  ぼくは手てが足あしの指ゆびに楽々らくらくとどくよ。↗

  I can easily touch my toes.
• 優にゆうにCommon
  adverbIts "comfortably" sense is mainly with verbs of reaching or exceeding an amount: "comfortably exceed a figure". For ordinary comfort of body or mind this is not the word you want.
  ここから郵便局ゆうびんきょくまではゆうに５キロあります。↗

  The post office is a good five kilometers away from here.
• 悠々ゆうゆうJLPT N2approx.Common
  adverb (with と)Covers "comfortably" as "without difficulty", doing or managing something with ease, often with an unhurried, composed air. A natural fit for living or getting by comfortably and without strain.

Choose 「のびのび」 for feeling relaxed and at ease, 楽々 for doing something with ease and no effort, 「優に」 for comfortably reaching or exceeding an amount, and 悠々 for managing without difficulty.

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

• のびのびcomfortably
• 楽々らくらくcomfortably
• 優にゆうにeasily (reach, exceed, etc.)
• 快くこころよくcomfortably
• おちおちquietly
• 無理なくむりなくreasonably
• 気持ちよくきもちよくpleasantly
• ぬくぬくsnugly
• ゆっくりwell (e.g. sleep)
• 悠々ゆうゆうeasily