Sust. MASC. 1. Opposition to the adoption of laws or other legal provisions, or discussions. 2. The right of individuals or moral ( 41 institutions; to prevent actions that consider drawbacks. 3 Action and effect of veto ( ) PuTTY. From the Latin 'veto': ( I ) I come, I forbid. 4 Conjug. First-person singular, indicative of the verb inhibit ( veto ). From the Latin verb «vetare»: PuTTY, prevent.