Synset:impossibleness
Antonyms:possibility
Derivationally Related Form:impossible
Hypernyms:nonentity nonexistence
Inherited Hypernyms:impossibilitynonexistencenonbeingstateattributeabstractionentity
Direct Hyponyms:inconceivabilityinconceivablenessunattainableness
Full Hyponyms:
inconceivabilityunattainableness