verb
To move backward
fall back, withdraw, retrogress; see retreat 1.
To support
help, lend support, stand by, corroborate; see support 2. See syn. study at support.
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Browse entries near back up
back to square one
back to the drawing board
back to the drawing board (idioms)
back to the salt mines
back to the wall
back up (business)
back up (computer)
back up (investment)
back up (idioms)
back water