ulster

aggravate, anger, annoy, bug, chafe, chivy (or chivvy), exasperate, fret, gall, get, grate, harass, harry, irk, irritate, nettle, peeve, pester, pique, put off, put out, rile, vex

bedevil, haunt, plague

abash, confound, confuse, discomfit, disconcert, discountenance, embarrass, faze, fluster, 'true'>, distress, disturb, exercise, flurry, frazzle, freak (out), fuss, hagride, perturb, undo, unhinge, unsettle, upset, weird out, worry

aggravate, anger, annoy, bug, chafe, chivy (or chivvy), exasperate, fret, gall, get, grate, harass, harry, irk, irritate, nettle, peeve, pester, pique, put off, put out, rile, vex

bedevil, haunt, plague

abash, confound, confuse, discomfit, disconcert, discountenance, embarrass, faze, fluster,