Bellyaches, 5 letters
Bitches, 5 letters
Cavils, 5 letters
Complains, 5 letters
Complains chronically, 5 letters
Continually finds fault, 5 letters
Criticizes peevishly, 5 letters
Criticizes unreasonably, 5 letters
Finds fault, 5 letters
Gripes, 5 letters
Grouses endlessly, 5 letters
Is a fault-finder, 5 letters
Jumps verbally (on), 5 letters
Moans and groans, 5 letters
Nitpicks, 5 letters
Peevish complaints, 5 letters
Quibbles, 5 letters
Harangues, 7 letters
Henpecks, 7 letters