Entry 1 sense Webster, 1913 Unworthy /ən-wẽrth'-ē/ · Un·wor·thy · IPA /ʌnˈwɝði/ 01 a. Not worthy; wanting merit, value, or fitness; undeserving; worthless; unbecoming; -- often with of. 1. Not worthy; wanting merit, value, or fitness; undeserving; worthless; unbecoming; -- often with of.