helpful Antonyms

unhelpful pernicious unfortunate unfriendly unpleasant useless valueless venenate vesicant vexatious vindictive worthless unfavorable troublesome toxic pestiferous pointless retaliatory reticent ruinous self-destructive shocking slaughterous spiteful subversionary wrackful unwholesome unaccommodating hindersome unproductive unconstructive out of the question self-absorbed uncooperative unedifying unhealthful useful as a chocolate teapot not good cringeworthy counterproductive counter-productive unprofitable offhanded allergic nonlinear cancerous ornery carcinogenic nonconductive dysfunctional