incivility /ɪnsɪˈvɪlɪti/ noun3 •The state of being uncivil; lack of courtesy; rudeness in manner.Courtezan. How say you now? is not your husband mad? / Adriana. His incivility confirms no less. — 1594 •Any act of rudeness or ill-breeding. •Lack of civilization; a state of rudeness or barbarism. formsincivilities