noun
colloquial language; slang; vulgar expression
Refers to informal, everyday speech, often with a nuance of being unrefined or vulgar. Can be used in linguistic contexts or to criticize someone's language.
彼の文章には俗言が多く、学術論文にはふさわしくない。
His writing contains a lot of colloquial language and is not suitable for an academic paper.
この辞書は俗言も収録している。
This dictionary also includes slang expressions.