'Underbred' definitions:
Definition of 'underbred'
From: WordNet
adjective
(of persons) lacking in refinement or grace [syn: ill- bred, bounderish, lowbred, rude, underbred, yokelish]
adjective
Of inferior or mixed breed; "an underbred dog"
Definition of 'Underbred'
From: GCIDE
- Underbred \Un"der*bred`\, a. Not thoroughly bred; ill-bred; as, an underbred fellow. --Goldsmith. [1913 Webster]