warranty (n.)
- affidavit
- assurance
- attestation
- authority
- authorization
- avouchment
- bail
- bond
- certificate
- certification
- clearance
- countenance
- credential
- deposition
- diploma
- empowerment
- enfranchisement
- entitlement
- faith
- fiat
- guarantee
- guaranty
- indemnity
- insurance
- note
- oath
- parole
- pledge
- plight
- promise
- ratification
- sanction
- security
- sheepskin
- surety
- testimonial
- ticket
- tie
- troth
- visa
- vise
- voucher
- vow
- warrant
- witness
- word
