sanction

(noun) formal and explicit approval. Synonyms: countenance, endorsement, indorsement, warrant, imprimatur. Example: "A democrat usually gets the union's endorsement."

(noun) a mechanism of social control for enforcing a society's standards.

(noun) official permission or approval. Synonyms: authority, authorization, authorisation. Example: "Authority for the program was renewed several times."

(noun) the act of final authorization. Example: "It had the sanction of the church."

(verb) give sanction to. Synonyms: approve, O.K., okay. Example: "I approve of his educational policies."

(verb) give authority or permission to.

(verb) give religious sanction to, such as through on oath. Example: "Sanctify the marriage."