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Certify Ok, Accept, Accredit, Acknowledge, Affirm, Allege, Amen, And Candle, Approve, Ascertain, Assert, Assert Under Oath, Asseverate, Assure, Attest, Authenticate, Authorize, Autograph, Aver, Avouch, Avow, Back, Back Up, Be Sponsor For, Bear Out, Bear Witness, Bolster, Bond, Book, Buttress, Certificate, Charter, Cinch, Circumstantiate, Classify, Clear Up, Clinch, Commission, Confirm, Corroborate, Cosign, Countersecure, Countersign, Decide, Declare, Depone, Depose, Determine, Disclose, Dismiss All Doubt, Document, Empower, Enable, Endorse, Enfranchise, Ensure, Entitle, Establish, Find Out, Fix, Fortify, Franchise, Get At, Give Evidence, Give Official Sanction, Give Permission, Give Power, Give The Go-Ahead, Give The Imprimatur, Give Thumbs Up, Guarantee, Guaranty, Initial, Insure, Kiss The Book, Legalize, Legitimize, License, Make Certain, Make No Doubt, Make No Mistake, Make Sure, Make Sure Of, Nail Down, Notarize, Pass, Pass On, Pass Upon, Patent, Permit, Privilege, Probate, Profess, Prove, Ratify, Reassure, Reinforce, Remove All Doubt, Rubber Stamp, Sanction, Say Amen To, Seal, Second, Secure, See That, See To It, Set At Rest, Settle, Sign, Sign And Seal, Sign For, Sort Out, Sponsor, Stand Behind, Stand Up For, Strengthen, Subscribe To, Substantiate, Support, Sustain, Swear, Swear And Affirm, Swear By Bell, Swear The Truth, Swear To, Swear To God, Swear To Goodness, Testify, Undergird, Undersign, Underwrite, Uphold, Validate, Verify, Visa, Vise, Vouch, Vouch For, Vouchsafe, Vow, Warrant, Witness