English dictionary

Hint: Question mark (?) is a wildcard. Question mark substitutes one character.

English verb: back up

1. back up (social) give moral or psychological support, aid, or courage to

SamplesShe supported him during the illness.
Her children always backed her up.

ExamplesSam cannot back up Sue


Pattern of useSomebody ----s something.
Somebody ----s somebody.
Something ----s somebody.
Something ----s something

Narrower (hyponym)advance, aid, assist, back, boost, buy at, encourage, endorse, frequent, further, help, indorse, patronise, patronize, promote, second, shop, shop at, sponsor, sponsor, undergird

2. back up (motion) move backwards from a certain position

SamplesThe bully had to back down.

Synonymsback down, back off

Pattern of useSomething ----s.
Somebody ----s

Broader (hypernym)draw back, move back, pull away, pull back, recede, retire, retreat, withdraw

3. back up (change) establish as valid or genuine

SamplesCan you back up your claims?.


Pattern of useSomebody ----s something.
Something ----s something

Broader (hypernym)affirm, confirm, corroborate, substantiate, support, sustain

4. back up (creation) make a copy of (a computer file) especially for storage in another place as a security copy

SamplesYou'd better back up these files!.

Pattern of useSomebody ----s something

Broader (hypernym)copy, re-create

Domain categorycomputer, computing device, computing machine, data processor, electronic computer, information processing system

5. back up (contact) become or cause to become obstructed

SamplesThe leaves clog our drains in the Fall.
The water pipe is backed up.

Synonymschoke, choke off, clog, clog up, congest, foul

Pattern of useSomething ----s.
Somebody ----s something.
Something ----s something

Broader (hypernym)block, close up, impede, jam, obstruct, obturate, occlude

Narrower (hyponym)block, choke up, crap up, gum up, lug, silt, silt up, stuff


Based on WordNet 3.0 copyright © Princeton University.
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