Difficult Synonyms

Words/phrases that have a similar definition to the word "difficult" include...

arduous, testing, hard, tiring, complicated, demanding, problematical, stubborn, not easy, easier said than done, thorny, tough, grueling, challenging, obstinate, recalcitrant, awkward, fractious, unmanageable, tricky, intricate, grim, trying, intractable, complex, strenuous

Other words in thesaurus...