English dictionary

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English noun: backup

1. backup (process) an accumulation caused by clogging or a stoppage

SamplesA traffic backup on the main street.
He discovered a backup in the toilet.

Broader (hypernym)accretion, accumulation

2. backup (person) someone who takes the place of another (as when things get dangerous or difficult)

SamplesThe star had a stand-in for dangerous scenes.
We need extra employees for summer fill-ins.

Synonymsbackup man, fill-in, relief, reliever, stand-in, substitute

Broader (hypernym)compeer, equal, match, peer

Narrower (hyponym)alternate, double, locum, locum tenens, replacement, stunt man, stunt woman, surrogate

3. backup (communication) a musical part (vocal or instrumental) that supports or provides background for other musical parts

Synonymsaccompaniment, musical accompaniment, support

Broader (hypernym)part, voice

Narrower (hyponym)descant, discant, vamp

4. backup (artifact) (computer science) a copy of a file or directory on a separate storage device

SamplesHe made a backup in case the original was accidentally damaged or erased.

Synonymscomputer backup

Broader (hypernym)duplicate, duplication

Domain categorycomputer science, computing

5. backup (act) the act of providing approval and support

SamplesHis vigorous backing of the conservatives got him in trouble with progressives.

Synonymsbacking, championship, patronage

Broader (hypernym)approval, approving, blessing

Based on WordNet 3.0 copyright © Princeton University.
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