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Definitions for: Back Up
[v] establish as valid or genuine; "Can you back up your claims?"
[v] become or cause to become obstructed; "The leaves clog our drains in the Fall"; "The water pipe is backed up"
[v] make a copy of (a computer file) esp. for storage in another place as a security cop; "You'd better back up these files!"
[v] move backwards from a certain position; "The bully had to back down"
[v] give moral or psychological support, aid, or courage to; "She supported him during the illness"
Synonyms: back, back down, back off, choke, choke off, clog, clog up, congest, foul, support
Antonyms: unclog
See Also: advance, affirm, aid, assist, back, block, boost, buy at, choke up, close up, confirm, copy, corroborate, crap up, draw back, encourage, endorse, frequent, further, gum up, help, impede, indorse, jam, lug, move back, obstruct, obturate, occlude, patronise, patronize, promote, pull away, pull back, recede, re-create, retire, retreat, second, shop, shop at, silt, silt up, sponsor, stuff, substantiate, support, sustain, undergird, withdraw
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