How to say "devoted" in Japanese

• 忠実ちゅうじつJLPT N1approx.Common
  na-adjective, nounCovers 'devoted' in the sense of faithful and loyal: steadfast devotion to a person or a duty, without the self-sacrificing nuance of 献身的. Picture a devoted friend or follower whose allegiance never wavers.
  あの翻訳ほんやくは原文げんぶんに忠実ちゅうじつだそうだ。↗

  That translation is said to be true to the original.
• 献身的けんしんてきCommon
  na-adjectiveThe word for 'devoted' meaning self-sacrificing: giving one's time and energy wholeheartedly for someone else, as a devoted parent or spouse does. This is what you want for devoted care.
  キング牧師ぼくしが献身的けんしんてきに力ちからを尽つくしたものすべてが水泡すいほうに帰かえしたかのように思おもわれた。↗

  Everything Rev. Martin Luther King had worked so hard for seemed lost.
• 一途いちずCommon
  na-adjective, noun, noun (suffix)Matches 'devoted (to)': wholehearted, single-minded devotion directed at one person or one goal, without looking elsewhere. Think of unwavering love for one person or dedication to a single pursuit.
• 一筋ひとすじJLPT N1approx.Common
  na-adjective, noun (suffix)Emphasizes earnest, resolute single-mindedness: devoting oneself to one pursuit or path without turning aside. The stress falls on resolve rather than self-sacrifice; for devoted care of a person, 献身的 fits better.

Choose 献身的 for self-sacrificing devotion, 忠実 for devotion as faithfulness or loyalty, and 一途 or 一筋 for single-minded devotion to one person or pursuit, with 一筋 stressing earnest resolve.

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

• 忠実ちゅうじつfaithful
• 献身的けんしんてきdevoted
• 一途いちずsingle-minded
• 忠なるちゅうなるdevoted
• かいがいしいbrisk and efficient
• 愛情深いあいじょうぶかいloving
• 貞実ていじつfaithful
• 一筋ひとすじearnest