expression, ichidan verb
make trouble; cause discord; make waves
Idiomatic expression meaning to disturb harmony or create conflict, often in social or organizational contexts. Literally 'to raise waves and wind'.
彼は会議で波風を立てるような発言をした。
He made a remark at the meeting that stirred up trouble.
波風を立てずに穏便に済ませたい。
I want to settle this quietly without causing any discord.