What does 口出し mean?
口出し is a Japanese noun meaning “meddling (in); butting in; interference; poking one's nose into” in English. It is written as 口出し in kanji, くちだし in hiragana, and kuchidashi in romaji. This word is part of JLPT N3 vocabulary.
Example sentence
他人のことには口出ししないよう彼に伝えてくれ。
Tell him to mind his own business.