不熱心(ふねっしん)

ふねっしん
na-adjective
unenthusiastic; indifferent; half-hearted
1. unenthusiastic; indifferent; half-hearted; lukewarm
Lacking enthusiasm or commitment toward something. Describes a person's attitude as disengaged or apathetic.
勉強(べんきょう)に不熱心(ふねっしん)な生徒(せいと)だ。
That student is unenthusiastic about studying.
環境問題(かんきょうもんだい)に不熱心(ふねっしん)な企業(きぎょう)は批判(ひはん)される。
Companies that are indifferent to environmental issues are criticized.
彼(かれ)は仕事(しごと)には不熱心(ふねっしん)だが、趣味(しゅみ)にはとても熱心(ねっしん)だ。
He is indifferent to work but very enthusiastic about his hobbies.

The negative form of 熱心(ねっしん) (enthusiastic, eager). Composed of 不(ふ) (not, un-) + 熱心(ねっしん) (enthusiastic). Used to describe a lack of interest or effort in a particular activity.

COMMON COLLOCATIONS:

  • 勉強(べんきょう)に不熱心(ふねっしん): unenthusiastic about studying
  • 仕事(しごと)に不熱心(ふねっしん): half-hearted about work
  • 不熱心(ふねっしん)な態度(たいど): an indifferent attitude
  • 不熱心(ふねっしん)な対応(たいおう): a lukewarm response

SIMILAR WORDS:

  • 無関心(むかんしん): apathetic, indifferent — stronger; implies complete lack of interest
  • やる気(き)がない: unmotivated — more colloquial
  • 消極的(しょうきょくてき): passive, negative — about attitude in general
  • 熱心(ねっしん): enthusiastic, eager — the direct antonym

THE 不(ふ)～ PATTERN:

The prefix 不(ふ) negates many na-adjectives and nouns:

  • 不(ふ)親切(しんせつ): unkind
  • 不(ふ)誠実(せいじつ): insincere
  • 不(ふ)十分(じゅうぶん): insufficient
general
Added 2026.4.2 2:30
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