Proper
Proper adjective - Marked by or showing careful attention to set forms and details.
Usage example: we had nodded and said hello to one another but had never had a proper introduction
Rude
Rude adjective - Showing a lack of manners or consideration for others.
Usage example: it's rude to call someone “ugly”
Both words in one sentence
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She's the prim-'n'-proper military specialist (and severe enough to make Weiss seem relaxed) and he's the rude and unkempt booze-hound Huntsman.
Source: Slobs Versus Snobs - Split Personality: Myrna Bookbottom is a polite librarian, being ridiculously proper and restrained with no outlet has caused her to develop an alter ego in the persona of Margaret Basher, a rude and outright violent woman.
Source: Video Game / Freaky Flyers -
They're actually called goblins by most humans, but it's pejorative and the narrator finds it sounds rude and uneducated, so he actively cajoles other characters to use the "proper" name even though they're pretty much standard D&D goblins down to their vital statistics block.
Cite this Source
Rude and Proper. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/proper/rude
Proper & Rude. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/proper/rude>.
Rude or Proper. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/proper/rude.
Google Ngram Viewer shows how "proper" and "rude" have occurred on timeline