| endorsement(noun, support, leave, agreement, approval) |
| imprimatur(noun, authorization, consent, go-ahead) |
| liberty(noun, pass, agreement, authority, approval) |
| pass(noun, verb, approve, permit, grant) |
| signal(noun, order, command, indication, authorization) |
| stamp of approval(noun, expression, idiom, understanding, agreement) |
| thumbs-up(noun, authorization, ok, go-ahead) |
| traffic light(noun, signal) |
| validation(noun, support, approval, sanction, evidence) |
| warrant(noun, support, order, pass, favor) |
| admission(authorization, consent, proof, verification, endorsement) |
| allowance(noun, understanding, agreement, authority, approval) |
| assent(noun, support, understanding, agreement, authority) |
| authentication(proof, verification, endorsement, substantiation, corroboration) |
| caution light |
| certification(noun, statement, authorization, commendation, document) |
| charter(noun, pass, authority, grant, authorization) |
| countersignature(support, authorization, commendation, confirmation, commercial) |
| entitlement(noun, grant, appropriation, subsidy, subvention) |
| go ahead(expression, proof, verification, endorsement, substantiation) |