成せい語ご

noun

set phrase; idiomatic expression

Refers to a fixed, conventional phrase or idiom, often with a classical or literary origin. Similar to 慣用句 but may emphasize the fixed, established nature of the expression.

• 「四し面めん楚そ歌か」は中ちゅう国ごくの故こ事じに由ゆ来らいする成せい語ごです。