WordReference English Thesaurus © 2014
back up
  • Sense: To move backward
    • fall back
    • withdraw
    • retrogress
    • retreat
    • move backward
    • reverse
    • regress
    • go back
    • go backwards

  • Sense: To support
    • help
    • lend support
    • stand by
    • corroborate
    • support
    • stick up for (slang)
    • bear out
    • confirm
    • validate
    • verify
    • substantiate
'back up' also found in these entries:

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