| Arduousness (n.) The quality of being arduous; difficulty of execution. Thesaurus Entries abstruseness, arduousness, bothersomeness, burdensomeness, complication, convolution, crabbedness, crampedness, deepness, difficultness, difficulty, esoterica, hairiness, hardness, inscrutability, intricacy, involvement, knottiness, laboriousness, onerousness, oppressiveness, profoundness, profundity, reconditeness, rigor, rigorousness, ruggedness, strenuousness, toilsomeness, toughness, troublesomeness |