Antonyms of adj courteous

2 senses of courteous

Sense 1
courteous, gracious, nice -- (exhibiting courtesy and politeness; "a nice gesture")

INDIRECT (VIA polite) -> impolite -- (not polite)

Sense 2
courteous (vs. discourteous) -- (characterized by courtesy and gracious good manners; "if a man be gracious and courteous to strangers it shows he is a citizen of the world"-Francis Bacon)

discourteous (vs. courteous) -- (showing no courtesy; rude; "a distant and at times discourteous young")
        => abrupt -- (surprisingly and unceremoniously brusque in manner; "an abrupt reply")
        => brusque, brusk, curt, short (predicate) -- (marked by rude or peremptory shortness; "try to cultivate a less brusque manner"; "a curt reply"; "the salesgirl was very short with him")
        => caddish, unchivalrous, ungallant -- (offensively discourteous)
        => unceremonious -- (without due formalities; "unceremonious dismissal from office")

Similarity of adj courteous

2 senses of courteous

Sense 1
courteous, gracious, nice -- (exhibiting courtesy and politeness; "a nice gesture")
       => polite (vs. impolite) -- (showing regard for others in manners, speech, behavior, etc.)

Sense 2
courteous (vs. discourteous) -- (characterized by courtesy and gracious good manners; "if a man be gracious and courteous to strangers it shows he is a citizen of the world"-Francis Bacon)
       => chivalrous, gallant, knightly -- (being attentive to women like an ideal knight)
          Also See-> respectful#1