| Adj. | 1. | unregistered - (of animals) not recorded with or certified by an official breed association; "unregistered dairy cattle" Antonyms: registered - (of animals) officially recorded with or certified by a recognized breed association; especially in a stud book; "a registered Percheron" |
| 2. | unregistered - not registered; "an unregistered citizen" Antonyms: registered - listed or recorded officially; "record is made of `registered mail' at each point on its route to assure safe delivery"; "registered bonds" | |
| 3. | unregistered - not filed or recorded in the place prescribed by law; "an unregistered trademark"; "an unregistered mortgage" Synonyms: unfiled | |
| 4. | unregistered - (a boat or vessel) not furnished with official documents |