Synonyms and related words :
aggravate, alienate, antagonize, come between, disaffect, disunite, divide, embitter, envenom, estrange, exacerbate, fan the flame, heat up, infuriate, irritate, light the fuse, madden, make trouble, pit against, provoke, separate, set at odds, set at variance, set on, sic on, sow dissension, stir up trouble