| Word | Definitions | Synonyms |
|---|---|---|
| unauthentic | (adjective) false or fake; not what it appears to be | Synonyms: inauthentic, spurious |
| unauthorised | (adjective) not endowed with authority | Synonyms: unauthorized |
| (adjective) without official authorization | Synonyms: unauthorized, wildcat | |
| unauthorized | (adjective) not endowed with authority | Synonyms: unauthorised |
| (adjective) without official authorization | Synonyms: unauthorised, wildcat |