side with (?.)

• accord
• act with
• advocate
• agree
• agree in opinion
• agree with
• align with
• back
• back up
• backstop
• champion
• chime in with
• close with
• coincide
• concur
• conform to
• ditto
• echo
• fall in with
• flock to
• get behind
• get in behind
• get together with
• go along with
• go in with
• go with
• join
• join hands with
• join up with
• join with
• line up with
• meet
• rally round
• range with
• run interference for
• second
• stand back of
• stand behind
• stand by
• stand in with
• stick by
• stick up for
• strike in with
• string along with
• swing in with
• take part with
• take sides with
• team up with
• throw in with
• unite with
• uphold