The antonyms for the word "unsigned" include "signed," "endorsed," "approved," "authorized," and "validated." A document that is signed signifies that it has been accepted, while an unsigned document raises questioning about its authenticity. Similarly, an endorsement or validation of an agreement lends credibility to it, while an unsigned one leaves it open to interpretation. The antonyms for the word "unsigned" are critical in legal, financial, and professional settings and ensure transparency, accuracy, and reliability. In conclusion, the antonyms of "unsigned" are valuable in conveying committed and recognized agreements, supporting accountability and verifiability.