un ‧ signed /ˌʌnˈsaɪnd◂/ BrE AmE adjective
[ Word Family: noun : ↑ sign , ↑ signal , ↑ signatory , ↑ signature , ↑ signing , ↑ signaller ; verb : ↑ sign , ↑ signal ; adverb : ↑ signally ; adjective : signed ≠ ↑ unsigned ]
1 . an unsigned letter or document has not been signed with someone’s name
2 . an unsigned sports player or musician has not yet signed a contract to play for a sports team or record music for a company