Concern, Despair, Devil, Devilment, Difficulty, Disadvantage, Disquiet, Disquietude, Distemper, Distress, Disturb, Dog, Dogging, Doubt, Drag, Dun, Evil, Exasperate, Exasperation, Exercise, Fret, Fretting, Fuss, Get, Gnaw, Goad, Gripe, Harass, Harassment, Harry, Harrying, Haunt, Headache, Heartache, Heckle, Hector, Hound, Hounding, Inconvenience, Irk, Matter, Mistrust, Molest, Molestation, Nag, Needle, Nettle, Nuisance, Oppress, Pelt, Perplex, Persecute, Persecution, Perturb, Pest, Pester, Pique, Plague, Presentiment, Problem, Provoke, Puzzle, Ride, Rile, Ruffle, Solicitude, Stew, Tease, Test, Torment, Torture, Trial, Trouble, Try, Uncertainty, Unease, Uneasiness, Upset, Vex, Vexation, Woe, Wrong, Ado, Afflict, Aggravate, Aggravation, Agitate, Ail, Anguish, Annoy, Annoyance, Anxiety, Badger, Bait, Bedevil, Bedevilment, Beset, Bore, Bother, Bristle, Bug, Care, Chafe