熱心
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Base na-adjective form. Describes a state of being passionate or dedicated. Used with 『な』 (na) before nouns, e.g., 『熱心な学生』 (nesshin na gakusei, 'enthusiastic student').
Theme
At a community center, User and their friend Ken discuss volunteering for a local festival. Ken is curious about User's level of enthusiasm for the event.
熱心
ねっしん
enthusiasm / enthusiastic
People & IdentityEmotions & Personality
Memory Hook
Think of someone so 'enthusiastic' they have a 'hot heart' — 『熱』 (netsu, 'heat') + 『心』 (shin, 'heart') = 『熱心』 (nesshin, 'enthusiasm'). 'Nesshin' sounds like 'nest in' — they're deeply nested in their passion!
Cultural Note
『熱心』 (nesshin, 'enthusiasm') is often used to describe people who are dedicated or passionate about their work, hobbies, or studies. In Japanese culture, showing 『熱心』 (nesshin) is highly valued in education and professional settings, reflecting diligence and commitment.
Forms
Base: 熱心Base na-adjective form. Describes a state of being passionate or dedicated. Used with 『な』 (na) before nouns, e.g., 『熱心な学生』 (nesshin na gakusei, 'enthusiastic student').
Negative: 熱心じゃないAdd 『じゃない』 (janai, 'not') after the base form → 『熱心じゃない』 (nesshin janai). Casual negative form.
Past: 熱心だったAdd 『だった』 (datta, past) after the base form → 『熱心だった』 (nesshin datta). Past tense form.
Adverbial: 熱心にAdd 『に』 (ni) after the base form → 『熱心に』 (nesshin ni). Used to modify verbs, e.g., 『熱心に勉強する』 (nesshin ni benkyou suru, 'to study enthusiastically').
Comparative: より熱心Comparative formed with modifier 『より』 (yori, 'more than') + base adjective, e.g., 『より熱心な人』 (yori nesshin na hito, 'a more enthusiastic person').
Superlative: 一番熱心Superlative formed with 『一番』 (ichiban, 'number one / Most') + base adjective, e.g., 『一番熱心な生徒』 (ichiban nesshin na seito, 'the most enthusiastic student').