unsigned /ˌʌnˈsaɪnd/ adjective Learner's definition of UNSIGNED
1
a : not having a signature未签名的 b : published without the name of the writer没有署名的 2
: not having a contract with a professional sports team, music company, etc.（与职业运动队、音乐公司等）未签约的 -
unsigned draft picks未签约的选拔球员
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an unsigned pitcher未签约的投手
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Their band is still unsigned.他们的乐队仍然没有签约。