BACK UP

• (verb) establish as valid or genuine

  "Can you back up your claims?"

  synonyms : back

• (verb) become or cause to become obstructed

  "The leaves clog our drains in the Fall", "The water pipe is backed up"

  synonyms : choke , choke off , clog , clog up , congest , foul

• (verb) make a copy of (a computer file) especially for storage in another place as a security copy

  "You'd better back up these files!"

• (verb) move backwards from a certain position

  "The bully had to back down"

  synonyms : back down , back off

• (verb) give moral or psychological support, aid, or courage to

  "She supported him during the illness", "Her children always backed her up"

  synonyms : support

WordNet® 3.0, © 2006 by Princeton University.

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