stand up for (?.)

• advocate
• allege in support
• answer
• argue for
• assert
• assure
• attest
• back
• be sponsor for
• bond
• certify
• champion
• confirm
• contend for
• counter
• countersecure
• defend
• endorse
• ensure
• espouse
• guarantee
• guaranty
• insure
• maintain
• make a plea
• plead for
• rebut
• refute
• reply
• respond
• riposte
• say in defense
• secure
• sign
• sign for
• speak for
• speak up for
• sponsor
• stand behind
• stick up for
• subscribe to
• support
• sustain
• undersign
• underwrite
• uphold
• urge reasons for
• warrant