underwrite (v.)

• accept
• accredit
• affirm
• approve
• arm
• armor
• assure
• attest
• authenticate
• authorize
• autograph
• avouch
• back
• bless
• bond
• certify
• champion
• cloak
• confirm
• copyright
• cosign
• countersign
• cover
• cushion
• defend
• endorse
• ensure
• fence
• fend
• finance
• guarantee
• guard
• harbor
• indorse
• initial
• insure
• keep
• nestle
• notarize
• okay
• pass
• patent
• permit
• pledge
• plight
• police
• promise
• protect
• ratify
• register
• safeguard
• sanction
• screen
• seal
• second
• secure
• shelter
• shield
• shroud
• sign
• sponsor
• subsidize
• support
• swear
• troth
• undersign
• uphold
• validate
• visa
• vise
• vouch
• vow
• warrant