backup.
A reserve or substitute.
Meaning & usage
A reserve or substitute.
If the goalkeeper is injured, we have a backup.
A copy of a file or record, stored separately from the original, that can be used to recover the original if it is damaged or destroyed.
After the power failure, we had to restore the database from backup.
An accumulation of material caused by a (partial) obstruction or (complete) blockage of the flow or movement of the material, or an accumulation of material that causes an overflow due to the flow being greater than the maximum possible flow.
The accident caused a mile-long backup on the highway.
The blockage caused a backup in the plumbing.
Reinforcements.
He's got a gun! You'd better send for backup.
Any support or extra help.
Accompaniment.
Corroboration.
Where this word comes from
Deverbal from back up.
Standby, reserve or extra.
I am only a backup player.
That is intended as a backup.
Make a backup copy of that file.
Supporting, reinforcing; (music) of or related to accompaniment
Where this word comes from
Deverbal from back up.
Alternative form of back up.
Where this word comes from
Deverbal from back up.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.