Attended by, or making, a loud and tumultuous noise; boisterous.
(uncountable) Insolent and shameless audacity.
‘We even had the effrontery to suggest that he should leave the country.’;
Stubbornly defiant; disobedient; resistant to authority or control, whether in a noisy manner or not.
(countable) An act of insolent and shameless audacity.
‘Any refusal to salute the president shall be counted as an effrontery.’;
Attended by, or making, a loud and tumultuous noise; clamorous; noisy; vociferous.
‘Beating the air with their obstreperous beaks.’;
Impudence or boldness in confronting or in transgressing the bounds of duty or decorum; insulting presumptuousness; shameless boldness; barefaced assurance.
‘Corruption lost nothing of its effrontery.’;
Resistant to control; unruly.
audacious (even arrogant) behavior that you have no right to;
‘he despised them for their presumptuousness’;
noisily and stubbornly defiant;
boisterously and noisily aggressive;
‘kept up an obstreperous clamor’;