Antonyms:effortlessness
Derivationally Related Form:effortful
Hypernyms:difficultness difficulty
Inherited Hypernyms:effortfulnessdifficultyqualityattributeabstractionentity
Direct Hyponyms:arduousnesslaboriousnessoperosenessstrenuousnesstoilsomeness
Full Hyponyms:
arduousnesslaboriousness