Longman Dictionary of Contemporary English
The Collaborative International Dictionary
Discourteous \Dis*cour"te*ous\ (?; see Courteous, 277), a. Uncivil; rude; wanting in courtesy or good manners; uncourteous. -- Dis*cour"te*ous*ly, adv. -- Dis*cour"te*ous*ness, n.
Douglas Harper's Etymology Dictionary
Wiktionary
a. impolite; lacking consideration for others
WordNet
adj. showing no courtesy; rude; "a distant and at times discourteous young" [ant: courteous]
lacking social graces [syn: ungracious]
Usage examples of "discourteous".
Don Quixote shouted even louder, calling them perfidious traitors and saying that the lord of the castle was a varlet and a discourteous knight for allowing knights errant to be so badly treated, and that if he had already received the order of chivalry, he would enlighten him as to the full extent of his treachery.
And all the while, that same discourteous Knight,Stood on the further bancke beholding him,At whose calamity, for more despightHe laught, and mockt to see him like to swim.
She's reputed to have shot an unlucky mugger, two looters, a discourteous doorman, and a Lhasa apso with carnal intentions regarding her Pom.
He was smiling because everybody else was smiling, and because one discourteous gringo who refuses to smile amid a crowd of ridiculously beautiful Spanish-Indian mestizo revellers is an endangered species.
He wanted to get on, but he was cordial and rode with the Crow because he felt that if he were discourteous some of the young bucks might try to make sport with him farther south, when he was out of range of the old chief's protection.