Synonymes warrant (anglais)

Nom
- authorization : authorisation, commission, license, permit, certificate, order, writ, chit
- guarantee : assurance, pledge, certify, warranty, security, guaranty, surety
- justification : authorisation, authorization, sanction, commission

Verbe
- authorize : sanction, license, delegate, empower
- guarantee : certify, approve, authorise, authorize, justify, sanction, assure, vouch for
- justify : explain, bear out