* Rude or impolite: They might interrupt, talk loudly, or use offensive language.
* Awkward or clumsy: They might have poor social skills or be physically clumsy.
* Uncultured or unrefined: They might lack knowledge of proper etiquette, art, or literature.
Here are some synonyms for uncouth:
* Boorish
* Crude
* Rough
* Vulgar
* Unpolished
* Unmannerly
* Unrefined
Example:
"The uncouth guest arrived late, belched loudly at the dinner table, and then proceeded to make inappropriate jokes."