discourteous
[adjective]
Synonyms: rude, bad-mannered, boorish, disrespectful, ill-mannered, impolite, insolent, offhand, ungentlemanly, ungracious

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Antonyms: courteous
Contrasted words: chivalrous, civil, courtly, gallant

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English Thesaurus: rude, impolite/not polite, cheeky, tactless, offensive, ...

[TahlilGaran] English Synonym Dictionary ▲

dis‧cour‧te‧ous /dɪsˈkɜːtiəs $ -ɜːr-/ adjective formal
not polite, and not showing respect for other people Synonym : rude, impolite:
It would be discourteous to ignore his request.
—discourteously adverb

[TahlilGaran] Dictionary of Contemporary English ▲

rude not following the rules of good social behaviour or treating other people with a lack of respect:
It’s rude to interrupt.
He’s the rudest man I’ve ever met.
rude remarks about her stomach
impolite/not polite not following the rules of good social behaviour. Impolite sounds rather formal:
It is impolite to stare.
It’s not polite to talk with your mouth full of food.
cheeky British English, smart/sassy American English behaving in a way that is a little rude, especially when this is amusing or annoying – used especially about children:
a cheeky grin
Let go, you cheeky monkey (=cheeky child)!
Don’t get smart with me!
tactless saying things that are likely to upset or embarrass someone, without intending to:
a tactless remark
How could you be so tactless?
offensive speaking or behaving in a way that is likely to upset or offend someone:
His remarks are offensive to African-Americans.
offensive language
insulting speaking or behaving in a way that is very rude and offensive to someone:
comments that are insulting to women
The article was full of insulting language.
discourteous /dɪsˈkɜːtiəs $ -ɜːr-/ formal rather rude. Discourteous sounds very formal and is often used when talking about being careful not to upset someone’s feelings:
He did not wish to appear discourteous towards his host.
It would seem discourteous to refuse her offer.
ill-mannered (also bad-mannered) especially written behaving in a rude way, especially because you have never been taught how to behave politely:
Ill-mannered movie-goers talked throughout the entire picture.
It was very bad-mannered.
disrespectful not showing the proper respect for someone or something:
I felt her comments were disrespectful to all the people who have worked so hard on this project.
impertinent formal not showing a proper respect for someone, especially by asking or talking about subjects that you do not have a right to know about:
an impertinent question about his private life
an impertinent young man
Would it be impertinent to ask how old you are?
insolent formal behaving in a way that is deliberately very rude to someone in authority:
The girl’s only response was an insolent stare.
Don’t be so insolent!
impudent formal rude, and having no respect for people who are older or more important:
The boy gave an impudent smile.
irreverent showing a lack of respect for someone or something who people are supposed to respect – used especially about comedy programmes and newspaper articles:
an irreverent look at the week’s events
his irreverent sense of humour

[TahlilGaran] English Thesaurus ▲