8110. The guests were offended by his uncouth manners.

✅ The correct answer is option D.
Wasteful : (of a person, action, or process) using or expending something of value carelessly, extravagantly, or to no purpose.

Dirty : covered or marked with an unclean substance.

Undesirable : not wanted or desirable because harmful, objectionable, or unpleasant.

Ungracious : not polite or friendly.

Uncouth : lacking good manners, refinement, or grace.

Synonym of Uncouth is Ungracious