criticise, criticize, pick apart, knock - find fault with; express criticism of; point out real or perceived flaws; "The paper criticized the new movie"; "Don't knock the food--it's free"

anathematise, anathematize, comminate, execrate, anathemise, anathemize - curse or declare to be evil or anathema or threaten with divine punishment

kvetch, plain, quetch, complain, sound off, kick - express complaints, discontent, displeasure, or unhappiness; "My mother complains all day"; "She has a lot to kick about"