Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun effrontery
1 sense of effrontery
Sense 1
presumption, presumptuousness, effrontery, assumption -- (audacious (even arrogant) behavior that you have no right to; "he despised them for their presumptuousness")
=> audacity, audaciousness -- (aggressive boldness or unmitigated effrontery; "he had the audacity to question my decision")