imprimatur
1. [ noun ] formal and explicit approval
Synonyms: sanction countenance warrant indorsement endorsement
Examples:

"a Democrat usually gets the union's endorsement"

Related terms: approval OK visa nihil_obstat approve certify sanction
Similar spelling:   impromptu
  imprint
  imperial
  imperialist
  imprecate
  imbricate
  imprinting
  imperially
  imbricated