色づく・色付く|いろづくirozuku[3]nakadaka (mid-high)

Which spelling to use
色づく色づく is the most common mixed kanji-and-kana spelling and the recommended choice for learners.
色付く色付く is a less common mixed kanji-and-kana variant of 色づく; you may encounter it, but learners should choose 色づく.
Definitions
  1. godan verb, intransitive verbto change color (of leaves in autumn); to turn red; to turn yellow
    葉はが色付いろづき始はじめた。↗
    The leaves have begun to color.
  2. godan verb, intransitive verbto ripen (and change color)
  3. godan verb, intransitive verbto become sexually aware; to reach puberty
Conjugation
Dictionary form色づく(いろづく)
Polite (masu)色づきます(いろづきます)
Negative (nai)色づかない(いろづかない)
polite (masen)色づきません(いろづきません)
classical zu / nu色づかず・色づかぬ(いろづかず・いろづかぬ)
Past (ta)色づいた(いろづいた)
polite (mashita)色づきました(いろづきました)
Past negative (nakatta)色づかなかった(いろづかなかった)
polite (masen deshita)色づきませんでした(いろづきませんでした)
Te form色づいて(いろづいて)
Potential色づける(いろづける)
Passive色づかれる(いろづかれる)
Causative色づかせる(いろづかせる)
Causative passive色づかせられる・色づかされる(いろづかせられる・いろづかされる)
Conditional (ba)色づけば(いろづけば)
tara色づいたら(いろづいたら)
Volitional色づこう(いろづこう)
polite (mashou)色づきましょう(いろづきましょう)
Imperative色づけ(いろづけ)

Common forms generated by rule; see the senses for honorific or irregular usage.

Transitive / intransitive pair
intransitive色づくいろづく⇄transitive色付けるいろづける
葉はが色いろづく
絵えを色いろ付つける
色づく describes something naturally taking on colour (as in 葉が色づく), while 色付ける means to deliberately add colour to something (as in 絵を色付ける).

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

Japanese definitions
  1. 果実かじつが熟じゅくして色いろが変かわる。
  2. 草木くさきが紅葉こうよう(黄葉こうよう)する。
  3. 大人おとなになる。成長せいちょうし色いろ気きづく。
Kanji in this word
See also

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