Ichidan verb, intransitive verb

  1. to break (into pieces), to be broken, to be smashed.
  2. to collapse, to crumble, to decline, to cool (e.g. enthusiasm), to dampen (e.g. one's will to fight).
  3. to become less formal, to throw off reserve, to become affable.
  4. to become easy to understand (e.g. a story).
  5. to be worried.

Variations

Pronunciation Kanji Kana Is Common
 
 
砕ける くだける
 
 
摧ける くだける

Contained Kanji Breakdown

smash, break, crush
くだ.く サイ (9th, N1)
stone
いし セキ シャク (1st, N3)
left hand, cliff(厂) variant
mouth
くち コウ ク (1st, N4)
soldier, private, die
ソツ シュツ そっ.する (Kentei 1)
nine
キュウ ク ここの (1st, N5)
ten
ジュウ ジッ ジュッ (1st, N5)