How to say "ardent" in Japanese

• 熱烈ねつれつCommon
  na-adjective, nounCovers 'ardent' as fervent, vehement feeling expressed outwardly — ardent support or welcome, for example. It presents the passion as intense and forceful, stronger than mere enthusiasm.
  彼かれは彼女かのじょの熱烈ねつれつな願ねがいに負まけた。↗

  He yielded to her ardent wishes.
• 熱心ねっしんJLPT N4approx.Common
  na-adjective, nounMatches 'ardent' in the sense of zealous, enthusiastic dedication: an ardent student, worker, or fan. It describes a person keenly devoted to an activity rather than the burning heat of emotion.
  この本ほんは彼かれの熱心ねっしんな研究けんきゅうの成果せいかである。↗

  This book is a result of his enthusiastic research.
• 切せつCommon
  na-adjective, nounSeldom the word you want for 'ardent': it really conveys earnest, eager intensity of feeling, and it also has a separate sense of 'kind', making it easy to grab by mistake.
• 熱いあついJLPT N5approx.Common
  i-adjectiveThis is the adjective 'hot', which by extension describes passionate feelings or an ardent gaze. Choose it when 'ardent' refers to the heat of emotion itself rather than zealous dedication.
• 灼熱しゃくねつCommon
  no-adjective, suru verb, intransitive verbPaints feeling as scorching heat: burning love or a passionate, heated debate. It is the most vividly figurative choice, for contexts where you want an image of burning intensity.

Choose 熱心 for keen enthusiasm toward an activity, 熱烈 for fervent, outwardly expressed passion such as support or welcome, 「熱い」 for hot feelings or a gaze, 灼熱 for vividly burning love or debate, and 切 seldom, for earnest eagerness.

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

• 熱烈ねつれつardent
• 熱心ねっしんzealous
• 切せつeager
• アーデントardent
• アーダントardent
• 弥猛やたけardent
• 切なるせつなるeager
• 情熱的じょうねつてきpassionate
• 熱情的ねつじょうてきglowing
• 熱いあついpassionate (feelings, etc.)
• 灼熱しゃくねつburning (love)