Synonyms for Nagging:

adj.

all (adjective)
shrewish.
painful (adjective)
afflictive, sensitive, hard, unpleasant, aching, sore, achy, smarting, awful, tormenting, hurtful, disagreeable.

n.

fractious, hurtful, hot-tempered, sore, painful, irritable, touchy, smarting, afflictive, short-tempered, achy, moody, irascible, temperamental, aching, pain, bad-tempered, sensitive. dictatorial, intrusive, on someone's back, meddlesome, bossy, autocratic, prescriptive, overbearing, domineering, interfering. bleak, harsh, unpleasant, objectionable, bad, awful, unattractive, unappealing, disagreeable, hard. nagging (noun)
ill-natured, shrewish.

v.

aggravating (verb)
exacerbating, pestering, disturbing, annoying, vexing, inflaming, Harrying, Harassing, irking, hassling, Bothering, exasperating, teasing, Bedeviling, grating, aggravating, infuriating, needling, Rankling, Discomposing, Fretting, Arousing, Enraging, tormenting, chafing, badgering, upsetting, perturbing, peeving, troubling, antagonizing, irritating, baiting, Envenoming.
compelling (verb)
pressuring, causing, Browbeating, driving, pushing, stressing, Dragooning, sparking, Coercing, obliging, urging, mandating, motivating, stimulating, pressing, galvanizing, propelling, Inciting, daunting, Dictating, hijacking, Fomenting, impelling, bullying, Bulldozing, compelling, goading, intimidating.
cussing (verb)
scolding, swearing, cursing, cussing, Blaspheming.

Other synonyms:

achy, afflictive, smarting, aching. hurtful, sore. painful. Other relevant words:
awful, unpleasant, ill-natured, sore, achy, painful, shrewish, pain, aching, disagreeable, sensitive, hard, afflictive, smarting, hurtful.

Usage examples for nagging

  1. They may place nagging obstacles in the way of its career, and burdens upon its back; but otherwise it is allowed to run its course. – A Cursory History of Swearing by Julian Sharman
  2. Any one but a nagging self- absorbed, and vain woman such as Flora would have marked these unmistakable signs. – Half Portions by Edna Ferber