Synonyms:
- John Hancock,
- OK,
- acceptance,
- affirmance,
- affirmation,
- approbation,
- approval,
- authentication,
- authorization,
- building permit,
- certification,
- confirmation,
- countersignature,
- endorsement,
- fishing license,
- go-ahead,
- green light,
- hunting license,
- license,
- nihil obstat,
- nod,
- notarization,
- okay,
- permission,
- permit,
- ratification,
- rubber stamp,
- sanction,
- seal,
- sigil,
- signature,
- signet,
- stamp,
- stamp of approval,
- subscription,
- the nod,
- validation,
- visa,
- vise,
- warrant