unsignedPronunciation: /ʌnˈsʌɪnd/Translate unsigned | into Spanish Definition of unsigned adjective 1not identified or authorized by a person’s signature:an unsigned cheque (of a musician or sports player) not having signed a contract of employment: an unknown and unsigned dance band 2 Mathematics & Computing not having a plus or minus sign, or a bit representing this. unsigned in other Oxford dictionaries Definition of unsigned in the US English dictionary