Synonyms for Annoying:

adj.

aggravating (adjective)
grating, antagonizing, Rankling, Harassing, exasperating, disturbing, pestering, upsetting, Enraging, Irksome, inflaming, exacerbating, troublesome, irritating, Bedeviling, tormenting, bothersome, vexing, perturbing, aggravating, teasing, infuriating.
all (adjective)
irritating, galling, nettlesome, plaguey, pestiferous, plaguy, pestering, bothersome, teasing, pesky, vexing, vexatious.
galling (adjective)
galling, Harassing.
irritating (adjective)
nettlesome.
offensive (adjective)
offensive.
painful (adjective)
crushing, Cramping, unbearable, grueling, hurtful, cruel, bitter, inflaming, smarting, biting, throbbing, trying, stinging, piercing, distressful, disagreeable, withering, Gnawing, irritating, aggravating, oppressive, troublesome, insufferable, wrenching, offensive, severe, agonizing, Irksome, harrowing, sore, stabbing, woeful, painful, excruciating, unpleasant, chafing, odious, Besetting, miserable, arduous, acute, cutting, burdensome, Torturing., tormenting, grievous, horrendous, anguishing, aching, bothersome, uncomfortable.
vexatious (adjective)
irritating, plaguy.

n.

obscene, pathetic. act (noun)
irritation, annoyance, vexation.
annoying (noun)
galling, plaguey, pestiferous, pestering, pesky, bothersome, teasing, annoyance, plaguy, vexatious, vexation, vexing, nettlesome, irritation, disagreeable, irritating.

v.

aggravating (verb)
nagging, badgering, peeving, Discomposing, Harrying, needling, baiting, Arousing, troubling, Envenoming.
boring (verb)
tiring, Dulling, Fatiguing, sedating, boring, wearying, tranquilizing.
displeasing (verb)
displeasing, disgusting, jarring, shocking, repelling, Aggrieving, provoking, disappointing, Angering, offending, Scandalizing, Riling.
irritating (verb)
vexing, Piquing, irking, acerbating, Bothering, teasing, irritating, Fretting, hassling.

Other synonyms:

pathetic. Other relevant words:
irritation, galling, nettlesome, pestiferous, pesky, plaguey, pathetic, annoyance, plaguy, obscene, vexatious, vexation.

Usage examples for annoying

  1. Third, he urged them to show respect and reverence towards King Guacanagari and his chiefs, and to the inferior chiefs, and to avoid annoying them or tormenting them, since they were to remain in a land that was as yet under native dominion; to " strive and watch by their soft and honest speech to gain their good- will and keep their friendship and love, so that he should find them as friendly and favourable and more so when he returned." – Christopher Columbus, Complete by Filson Young
  2. It's a demmed annoying attitude. – Master Tales of Mystery, Volume 3 by Collected and Arranged by Francis J. Reynolds
  3. In fact, it had been rather unpleasant to find nearly all the shops shut day after day, and it had become really awkward and annoying not to be able to get money as one required it. – Good Old Anna by Marie Belloc Lowndes