discourteous

adjectives

showing no courtesy; rude
"a distant and at times discourteous young"
discourteous
antonym
courteous
is similar to
surprisingly and unceremoniously brusque in manner
"an abrupt reply"
abrupt
is similar to
marked by rude or peremptory shortness
"try to cultivate a less brusque manner"; "a curt reply"; "the salesgirl was very short with him"
brusk, brusque, curt, short
is similar to
offensively discourteous
caddish, unchivalrous, ungallant
is similar to
without due formalities
"unceremonious dismissal from office"
unceremonious
see also
exhibiting lack of respect; rude and discourteous
"remarks disrespectful of the law"; "disrespectful in the presence of his parents"; "disrespectful toward his teacher"
disrespectful
is an attribute of
a courteous manner
courtesy, good manners
lacking social graces
discourteous, ungracious