Synonyms for Harrying:

adj.

•torturous (adjective)
troubling.

v.

•aggravating (verb)
exacerbating, grating, nagging, chafing, Envenoming, teasing, inflaming, baiting, vexing, irritating, perturbing, exasperating, badgering, disturbing, infuriating, troubling, aggravating, tormenting, antagonizing, Arousing, irking, Fretting, Harassing, Enraging, peeving, Bothering, hassling, Discomposing, Rankling, annoying, needling, Bedeviling, upsetting, pestering.
•attacking (verb)
lashing, invading, Assailing, scorching, fighting, slashing, Violating, hammering, battering, Charging, Assaulting, raiding, Bombarding, Combating, rioting, raping, pounding, barraging, Scarifying, trouncing, Lunging, Storming, attacking, striking, hitting, savaging, scathing, Flaying, thrusting.
•pursuing (verb)
Chasing, searching, tracking, aspiring, seeking, dogging, following, striving, Intending, trailing, tailing, undertaking, pursuing, questing, Aiming, hunting, sleuthing, Endeavoring, stalking.