1. (of persons) lacking in refinement or grace
   - ill-bred, bounderish [Brit, archaic], lowbred, rude, yokelish 
2. Of inferior or mixed breed
   "an underbred dog"

See also: crossbred, unrefined

• overachieve
• overachievement
• overachiever
• overact
• overacting
• overactive
• overactivity
• overage
• overaged
• overall
• overambitious
• overanxiety
• overanxious
• overappraisal
• overarch
• overarm
• overawe
• overawed
• overbalance
• overbear
• overbearing
• overbearingly
• overbearingness
• overbid
• overbite