砕ける

1. Origins, structure, and basic meaning

• Structure: 砕ける (くだける) adds okurigana ける to breaking 砕, forming an intransitive verb.
• Basic usage: It describes a plate shattering and a speaking style becoming more casual.

2. Common pitfalls and similar expressions

• Physical breakage and relaxed register
  • A solid object gives the literal sense, while speech becoming 砕ける means formality and stiffness diminish.