to change an existing situation in a way which causes problems or upsets people Some workers felt it was not the time to make waves by organizing a union.Our culture encourages us to fit the norm and not to make waves.
Cause a disturbance or controversy, as in We've finally settled our differences, so please don't make waves. This expression alludes to causing turbulence in the water. [Slang; mid-1900s] Also see rock the boat.