1. (adj)thoroughbred, purebred, pureblood a pedigreed animal of unmixed lineage; used especially of horses Synonyms: thoroughbred, pureblood, purebred Antonyms: underbred, bigeneric, half-breed, hybrid, half-bred, crossbred, half-blooded, intercrossed
2. (adj)purebred bred for many generations from member of a recognized breed or strain Antonyms: half-breed, crossbred, intercrossed, underbred, bigeneric, half-bred, half-blooded, hybrid