discourteous
dɪsˈkəːtɪəs
adjective
showing rudeness and a lack of consideration for other people.
it would be unkind and discourteous to decline a visit
synonyms
rude · impolite · ill-mannered · bad-mannered · disrespectful · uncivil · unmannerly · unchivalrous · ungallant · ungentlemanly · unladylike · ill-bred · churlish · boorish · crass · ungracious · graceless · uncouth · insolent · impudent · cheeky · audacious · presumptuous · curt · brusque · blunt · offhand · unceremonious · short · sharp · uncomplimentary · offensive · insulting · derogatory · disparaging · ignorant · malapert · contumelious · underbred · mannerless