Akademik

difficult
I adjective arduous, attended by obstacles, awkward, beset with difficulty, beyond one's reach, bothersome, burdensome, complex, complicated, convoluted, difficile, difficilis, encompassed with difficulties, enigmatic, entangled by difficulties, fatiguing, grueling, hard, hard to deal with, hard to manage, hard to understand, impassable, impeditus, impenetrable, incomprehensible, insoluble, insurmountable, intractable, involved, labored, laborious, labyrinthine, obscure, obstinate, offering a problem, operose, out of reach, painstaking, perplexing, perverse, problematic, puzzling, recondite, refractory, strenuous, stubborn, surrounded by difficulties, too hard, troublesome, unachievable, unapproachable, unavailable, uncertain, unclear associated concepts: difficult and extraordinary action, difficult and extraordinary case or proceeding II index complex, elusive, formidable, fractious, froward, impracticable, insuperable, intricate, labyrinthine, lawless, obscure (abstruse), onerous, opaque, operose, oppressive, painful, perverse, petulant, problematic, querulous, recondite, restive, severe, uncompromising

Burton's Legal Thesaurus. . 2006