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. 無効

    無効

    無む効こう

    invalid

    N1KMT5News #7+1CoreNoun, Particle, AdjectivePolitics & LawKanji Vocab20 strokes

    むこう

    Noun, Particle, Adjective

    1.
    invalid, void, ineffective, unavailable

    Stroke 0 / 20

    Speed1.0x

    このチケットは無む効こうです。

    This ticket is invalid.

    KMT3Daily Life
    期き限げんが切きれたクーポンは無む効こうになります。

    Expired coupons become invalid.

    KMT5Daily Life
    彼かれの主しゅ張ちょうは証しょう拠こがないため、無む効こうと判 断 された。

    His claim was judged invalid due to lack of evidence.

    KMT6Politics & LawWork & Career
    投とう票ひょう用よう紙しに不ふ備びがあったため、その票ひょうは無む効こうとされた。

    Because there was a defect in the ballot paper, that vote was invalidated.

    KMT6Politics & Law
    契けい約やく書しょに署しょ名めいがなければ、その契けい約やくは法ほう的てきに無む効こうとなる。

    If there is no signature on the contract, the contract becomes legally invalid.

    KMT7Politics & LawBusiness & Finance

    Kanji that make up this word

    無
    な.い…(2)
    nothingness・none・ain't・nothing・nil…(1)
    効
    き.く・ききめ・なら.う…(1)
    merit・efficacy・efficiency・benefit
    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

    • 無
    • 効

    Explore more

    Kanji Vocab dictionary›Browse all entries›