How to say "comfortable" in Japanese

Choosing the right word
  • adverb (with と), suru verbA mimetic word for comfort as relaxed, roomy ease: loose clothing, spacious seating, an unhurried pace. It paints a scene of calm, uncramped comfort.
    Forget the anxieties of life and learn to relax.
  • 快適かいてきJLPT N3approx.Common
    na-adjective, nounPhysical, environmental comfort: a comfortable room, chair, temperature, or living situation. Use it when one's surroundings or conditions make daily life easy and pleasant.
    これはたいそう快適かいてきな暖炉だんろですね。↗
    This is a very nice fireplace.
  • 心地よいここちよいCommon
    expression, i-adjective (よい/いい)Comfort felt in the body or the senses: a comfortable temperature, a pleasant breeze or texture. It names the felt pleasantness itself.
    The flowers give off a very pleasant scent.
  • 気楽きらくJLPT N1approx.Common
    na-adjective, nounComfort as a state of mind: carefree, unburdened, at ease. It suits a relaxed, worry-free way of living or feeling, with nothing weighing on one's mind.
    ほんの気楽きらくなパーティーだった。↗
    It was only an informal party.
  • 快いこころよいJLPT N1approx.Common
    i-adjectivePrimarily 'pleasant, agreeable, refreshing': a refreshing breeze or an agreeable reply. As a rendering of 'comfortable' it is marginal; choose it when refreshment or ready agreeableness is the point.
    私は昨夜さくや快こころよく眠ねむった。↗
    I slept comfortably last night.

Choose 快適 for comfort of one's surroundings, 「心地よい」 for comfort felt in body or senses, 「ゆったり」 for relaxed, roomy ease, 気楽 for carefree ease of mind, and 「快い」 chiefly for pleasant, refreshing feelings.

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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