underbred

/ˌʌndərˈbrɛd/
adjective
  1. Lacking good manners or refinement; ill-bred.
    • She found his loud and boastful behavior underbred and unpleasant.
    • His underbred comments at the dinner table embarrassed his hosts.
    • The critic described the performance as underbred and lacking in taste.
  2. Of inferior or mixed breeding, especially for animals.
    • Underbred horses often lack the stamina of purebreds.
    • The farmer avoided using underbred livestock for his breeding program.
    • The underbred dog did not meet the breed standards for competition.
Synonyms
What does "underbred" mean? | whatsthatwordmean | whatsthatwordmean