Re signs, a verb that means to sign again, can have many antonyms depending on the context. If we look at antonyms that describe the opposite of signing again, some possible options are: cancel, revoke, invalidate, nullify, rescind or retract the original signature. If we consider antonyms that suggest a one-time action, some possibilities are: sign, endorse, approve, authorize, or validate. In the context of employment, antonyms might include quit, resign, retire, or terminate. In legal contexts, antonyms might include convict, punish, charge, or prosecute. Overall, when searching for antonyms of re signs, one must consider the context and the specific meaning that needs to be opposed.