problematic Synonyms

complicated uncertain controversial debatable troublesome questionable difficult tough knotty doubtful dubious problematical baffling involved complex rocky painful sensitive opposable operose sticky paradoxical refutable prickly perplexed perplexing puzzling chancy precarious problem stochastic stressful problematically unsure iffy unresolved longshot borderline undecided undetermined unsettled upstream trying troubled tricky touchy tight ticklish thorny unclassifiable