| verb | give sanction to “I approve of his educational policies” |
| verb | give authority or permission to |
| verb | give religious sanction to, such as through on oath “sanctify the marriage” |
| adjective | conforming to orthodox or recognized rules; - Sinclair Lewis “the drinking of cocktails was as canonical a rite as the mixing” |
| adjective | formally approved and invested with legal authority |
| adjective | established by authority; given authoritative approval “a list of approved candidates” |
| approbative | adjective | expressing or manifesting praise or approval |
| approbation | noun | official recognition or approval |
| approver | noun | an authority with power to approve |
| approval | noun | the formal act of approving |
| OK | noun | an endorsement |
| O.K. | noun | an endorsement |
| okay | noun | an endorsement |
| sanction | noun | formal and explicit approval |
| sanctionative | adjective | implying sanction or serving to sanction |