Backup
Backup noun - A person or thing that takes the place of another.
Usage example: you didn't get the lead position, but you can be the backup to the chosen singer
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Synonyms for Backup
Reserve is a synonym for backup in substitute topic. In some cases you can use "Reserve" instead the word "Backup" as a noun or an adjective, when it comes to topics like increase. popular alternative
Nearby Word: backing
Reserve
Reserve noun - A person or thing that takes the place of another.
Usage example: when the first brigade fell back in retreat, the commander sent out the reserves to try to hold the line of battle
Backup is a synonym for reserve in increase topic. You can use "Backup" instead the word "Reserve" as a noun or an adjective, if it concerns topics such as reinforcements. popular alternative
Mutual synonyms
How words are described
Both words in one sentence
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Though he started only one game for the Lakers and never averaged more than 15 ppg, he was their top frontcourt reserve, providing quality minutes as Kareem Abdul-Jabbar's backup at center and Kurt Rambis' backup at power forward.
Source: Career Resurrection -
They were mounted longbowmen who dismounted to use their longbows while the knights except for a small reserve dismounted beside them to form a backup.
Source: Horse Archer -
Lazy Backup: When your frontline party falls it's game over, even if you have reserve teams capable of fighting.
Source: Video Game / 7th Dragon
Cite this Source
Reserve and Backup. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/backup/reserve
Backup & Reserve. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/backup/reserve>.
Reserve or Backup. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/backup/reserve.
Google Ngram Viewer shows how "backup" and "reserve" have occurred on timeline