砕

サイ

くだ.く、くだ.ける

砕, 石, 口, 卆, 九, 乙, 十

石

smash, break, crush, familiar, popular

砕く(くだく): to break; to smash
砕ける(くだける): (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