kvetch,
plain,
quetch,
complain,
sound off,
kick make a formal accusation; bring a formal charge; "The plaintiff's lawyer complained that he defendant had physically abused his client"
nag -
remind or urge constantly; "she nagged to take a vacation"
remind put in the mind of someone; "Remind me to call Mother"
nag -
worry persistently; "nagging concerns and doubts"
vex,
worry subject to prolonged examination, discussion, or deliberation; "vex the subject of the death penalty"