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WordNet-Online
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Noun back-up has 5 senses
- backup - an accumulation caused by clogging or a stoppage; "a traffic backup on the main street"; "he discovered a backup in the toilet"
--1 is a kind of accretion, accumulation
- stand-in, substitute, relief, reliever, backup, backup man, fill-in - someone who takes the place of another (as when things get dangerous or difficult); "the star had a stand-in for dangerous scenes"; "we need extra employees for summer fill-ins"
--2 is a kind of peer, equal, match, compeer
--2 has particulars:
- accompaniment, musical accompaniment, backup, support - a subordinate musical part; provides background for more important parts
--3 is a kind of part, voice
--3 has particulars: descant, discant; vamp
- backup, computer backup - (computer science) a copy of a file or directory on a separate storage device; "he made a backup in case the original was accidentally damaged or erased"
--4 is a kind of duplicate, duplication
- backing, backup, championship, patronage - the act of providing approval and support; "his vigorous backing of the conservatives got him in trouble with progressives"
--5 is a kind of blessing, approval, approving
Verb back-up has 5 senses
- support, back up - give moral or psychological support, aid, or courage to; "She supported him during the illness"; "Her children always backed her up"
Sample sentence:
Sam cannot back up Sue
- back up, back off, back down - move backwards from a certain position; "The bully had to back down"
--2 is one way to withdraw, retreat, pull away, draw back, recede, pull back, retire, move back
Sample sentences:
Something ----s
Somebody ----s
- back, back up - establish as valid or genuine; "Can you back up your claims?"
--3 is one way to confirm, corroborate, sustain, substantiate, support, affirm
Sample sentences:
Somebody ----s something
Something ----s something
- back up - make a copy of (a computer file) especially for storage in another place as a security cop; "You'd better back up these files!"
--4 is one way to copy, re-create
Sample sentence:
Somebody ----s something
- clog, choke off, clog up, back up, congest, choke, foul - become or cause to become obstructed; "The leaves clog our drains in the Fall"; "The water pipe is backed up"
--5 is one way to obstruct, obturate, impede, occlude, jam, block, close up
Sample sentences:
Something ----s
Somebody ----s something
Something ----s something
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