(of a letter, painting, etc.) with no name or signature on it, saying who has written or painted it

an unsigned portrait in oil of an army officer 一幅未签名的军官油画肖像

The cheque was unsigned. 支票尚未签名。

not having signed a contract (= a legal document stating a formal agreement) of employment

There are still a handful of players who remain unsigned for next season. 还有一些球员没有下个赛季的签约。

It's a weekly radio show that gives the best unsigned musicians the airplay that they deserve. 这是一个每周一次的广播节目，为那些没有签约的最好音乐人提供他们应得的播放机会。