colloquial expression; colloquialism
A word, phrase, or expression characteristic of informal spoken language rather than formal writing.
"Yabai" is a commonly used colloquial expression.
This text has too many colloquial expressions.
Refers to literary or written-style expressions, contrasting with the spoken, informal nature of 口語表現.
Slang; more informal and often group-specific than 口語表現, which covers general colloquial language.
Compound of 口語 (こうご, 'spoken language') and 表現 (ひょうげん, 'expression').