What does 俗語 mean?
俗語 is a Japanese noun meaning “slang” in English. It is written as 俗語 in kanji, ぞくご in hiragana, and zokugo in romaji. This word is part of JLPT N2 vocabulary.
Example sentence
できることなら俗語は使わないようにしなさい。
Don't use slang if you can help it.