Synonyms of 'controversial'

arguable, argumentative, belligerent, cat-and-dog, combative, conjectural, contentious, contestable, debatable, deniable, dialectic, disputable, disputatious, doubtful, dubious, dubitable, eristic, factious, iffy, litigious, logomachic, mistakable, moot, polemic, problematic, provocative, quarrelsome, questionable, scrappy, speculative, suspect, suspicious, unsettled