ill-mannered

American  

[il-man-erd] / ˈɪlˈmæn ərd /

adjective

1. having bad or poor manners; impolite; discourteous; rude.

   Synonyms:

   uncivil, crude, unpolished

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ill-mannered British  

adjective

1. having bad manners; rude; impolite

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Other Word Forms

• ill-manneredly adverb
• ill-manneredness noun

Etymology

Origin of ill-mannered

late Middle English word dating back to 1375–1425; see origin at ill, mannered

Explanation

Someone who's ill-mannered is rude. It would be ill-mannered to show up an hour late to your cousin's wedding reception with a carful of your (uninvited) friends. If you act in an impolite, ungracious, or discourteous way, you'll be thought of as ill-mannered. It's ill-mannered to cut in front of people in line, to take a subway seat where an elderly person was getting ready to sit, or to invite everyone in your class except one person to your birthday party. Ill-mannered adds the prefix ill-, "badly," to mannered, "having manners," from manner, "way of doing things."

Example Sentences

The accompanying photo portraits are mostly hideous, in Ms. Wiles’s case also ill-mannered and unkind.

From The Wall Street Journal • Dec. 18, 2025

Ferrigan said that a local official’s choice not to lower flags after a president’s executive directive might be seen as somewhat ill-mannered but wouldn’t be breaking any rules.

From Los Angeles Times • Sep. 17, 2025

Writing on Instagram on Thursday, singer Sir Rod Stewart described Wallace as an "ill-mannered bully", and said the presenter "humiliated" his wife when she was on MasterChef in 2021.

From BBC • Nov. 28, 2024

Mason called her “the most selfish, ill-mannered, inconsiderate actress that I’ve ever had the displeasure of working with,” according to a report in Newsweek.

From Washington Post • Feb. 15, 2023

Cree artist William Kent Monkman reimagined the “discovery of America” with oddly dressed, ill-mannered, and greedy invaders.

From "An Indigenous People’s History of the United States" by Roxanne Dunbar-Ortiz