21 possible answers to
Answers with 4 characters: BUGS IRES IRKS NAGS Answers with 5 characters: RILES GALLS MIFFS VEXES Answers with 6 characters: EATSAT GETSTO NAGSAT PEEVES CHAFES TEASES Answers with 7 characters: BOTHERS HASSLES MOLESTS PESTERS PUTSOUT Answers with 9 characters: IRRITATES Answers with 15 characters: RUBSTHEWRONGWAY