stand up with
Be the principal witness at a wedding, that is, act as best man or maid or matron of honor. For example, Jane asked her sister to stand up with her.
Words nearby stand up with
stand to reason,
stand up,
stand up and be counted,
stand up for,
stand up to,
stand up with,
stand your ground,
stand-alone,
stand-down,
stand-in,
stand-off half