Kumi logo
    Kumi

    Learn Japanese. Where understanding folds into fluency.

    Dictionary

    KanjiKanji vocabularyKana vocabularyKanaRadicalsGrammarJLPT N5

    Learn

    GuidesStart where you areWhat is KMT?RoadmapFAQ

    Connect

    EmailDiscordInstagramThreadsTikTokYouTubeLinkedInBlueskyX

    Newsletter

    Start learning free →

    Free forever tier. No card required.

    © 2026 Kumiai Inc. All rights reserved.

    AboutFAQContactStatusPrivacyTermsAttributions
    Dictionary
    1. Dictionary
    2. Kanji Vocab
    3. 一大決心

    一大決心

    一いち大だい決けっ心しん

    momentous (crucial) decision

    NTNoun, Participle, VerbEmotions & PsychologyKanji Vocab15 strokes

    いちだいけっしん

    Noun, Participle, Verb

    1.
    momentous (crucial) decision
    yojijukugo

    Stroke 0 / 15

    Speed1.0x

    Kanji that make up this word

    一
    ひと-・ひと.つ…(13)
    one・one radical (no.1)
    大
    おお-・おお.きい・-おお.いに…(15)
    large・big
    決
    き.める・-ぎ.め・き.まる・さ.く…(1)
    decide・fix・agree upon・appoint
    心
    こころ・-ごころ…(1)
    heart・mind・spirit・heart radical (no. 61)
    Kumi logo

    Track your mastery

    Kumi's KMT system tracks your mastery across kanji, vocabulary, grammar, and reading. Create a free account to use it on 220,000+ concepts.

    Related concepts for this entry

    Used in vocabulary

    • 一
    • 大
    • 決
    • 心

    Explore more

    Kanji Vocab dictionary›Browse all entries›