stand behind (?.)
- assure
- attest
- back
- back up
- be sponsor for
- bond
- certify
- champion
- confirm
- countersecure
- endorse
- ensure
- get behind
- get in behind
- guarantee
- guaranty
- insure
- run interference for
- second
- secure
- side with
- sign
- sign for
- sponsor
- stand back of
- stand by
- stand up for
- stick by
- stick up for
- subscribe to
- take sides with
- undersign
- underwrite
- warrant
