The Meaning of nesshin [熱心] In Japanese

熱心
ねっしん
Romaji: nesshin N4

What does 熱心 mean?

Translation and Meaning

enthusiastic, eager, keen, ardent

Definition

熱心 means being enthusiastic or deeply eager about something. It describes a strong, active interest and dedication toward a task or goal, and is used as a na-adjective to describe people or attitudes (熱心な).

Type

na-adjective (形容動詞)

Stroke Order

Meanings

  • zeal toward a task or subject
  • ardent dedication or strong interest
  • as 熱心な, describing a person or attitude
  • 熱心に to do something with zeal

Composition

  • 熱: heat, warmth, passion
  • 心: heart, mind
  • 合成: combined to express a heated heart, metaphorically a state of ardor or zeal

Usage

Used in formal and casual contexts. As a description of a person, 熱心な + noun is common; to describe actions, use 熱心に + verb. Examples (in Japanese): 熱心な研究者 (nesshin na kenkyusha); 熱心に取り組む; 彼は熱心だ.

💡 Tips
Visualize a heart warmed by fire; the small tsu in ねっしん indicates the intensity of the heat boosting the heart’s zeal.

Variations

  • 情熱的な (jounetsuteki na) — passionate
  • 真剣な (shinken na) — earnest
  • 熱意がある (netsui ga aru) — to have enthusiasm
  • 無関心 (mukanshin) — indifference
  • 冷淡な (reikan na) — indifferent

Example Phrases

  • 彼は 熱心 に 学校の 実習 を 進めている。
    Kare wa nesshin ni gakkou no jisshuu wo susumete iru.
    He is enthusiastically progressing with the school’s internship.
    Lista:
    • 彼は (Kare wa) – he
    • 熱心 (nesshin) – zeal
    • に (ni) – to
    • 学校の (gakkou no) – school’s
    • 実習 (jisshuu) – internship
    • を (wo) – object marker
    • 進めている (susumete iru) – is advancing
    Here, 「熱心」 means zeal and is used in the adverbial form 「熱心に」 to modify 「進めている」.
熱心