1
as in to testify (to)
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1
as in jam
a crowded mass (as of cars) that impedes or blocks movement
there was the inevitable backup of travelers trying to pass through airport security
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2
as in replacement
a person or thing that takes the place of another
you didn't get the lead position, but you can be the backup to the chosen singer
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as in makeshift
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Examples of back (up) in a Sentence
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Recent Examples on the Web
Shubham Yewale, PCMAG, 17 Oct. 2024
Recovery is often simple through remote backups and restore to recover.
—Amir Elichai, Forbes, 22 Oct. 2024
Wide receiver Deebo Samuel and backup running back Jordan Mason are both active and healthy after spending the week as limited participants in practice, per the team.
—Sam Joseph, CNN, 19 Oct. 2024
Then, a subsequent elbow injury suffered in the 1991 preseason vaulted longtime backup Steve Young into the starting role in San Francisco.
—Jim Reineking, USA TODAY, 18 Oct. 2024
See all Example Sentences for back (up) 
Noun
Meanwhile, the battery backup is impressive, with up to two days of playing on a single charge.
—Shubham Yewale, PCMAG, 17 Oct. 2024
Recovery is often simple through remote backups and restore to recover.
—Amir Elichai, Forbes, 22 Oct. 2024
Wide receiver Deebo Samuel and backup running back Jordan Mason are both active and healthy after spending the week as limited participants in practice, per the team.
—Sam Joseph, CNN, 19 Oct. 2024
Then, a subsequent elbow injury suffered in the 1991 preseason vaulted longtime backup Steve Young into the starting role in San Francisco.
—Jim Reineking, USA TODAY, 18 Oct. 2024
See all Example Sentences for back (up)
Recent Examples of Synonyms for back (up)
Verb
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Do some team members gel better with your EA than others?Kenzie Biggins, Forbes, 14 Oct. 2024
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That movement gelled into the Make Elections Fair Arizona Act, now on the ballot as Proposition 140.Mary Jo Pitzl, The Arizona Republic, 12 Oct. 2024
Noun
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Throwback Haunted House Party on Saturday starting at 9pm, with a 90s costume contest, old-school jams and a dance-off.Joe Guillen, Axios, 24 Oct. 2024
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The slinky love jam doesn’t shy away from old-school R&B pleasures and allows the Nigerian superstar to showcase his nimble flow.Mitchell Peters, Billboard, 20 Oct. 2024
Noun
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An injury to star goalkeeper Alisson may negatively affect this, but his replacement, Kelleher, is widely considered one of the best backup goalkeepers in the league.James Nalton, Forbes, 24 Oct. 2024
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The Substance follows 50-something Elisabeth Sparkle (Demi Moore), a Hollywood star who finds herself at a point in her career when the men around her are on the lookout for a younger, perkier replacement.Daisy Jones, Vogue, 24 Oct. 2024
Verb
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That bears out in New York City, where new regulations went into effect in September 2023, barring owners and tenants from renting their entire apartment or home to visitors for fewer than 30 days.Samantha Delouya, CNN, 28 Oct. 2024
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Curry misfired on a pair of open looks, but the spacing concerns of that combination bore out.Danny Emerman, The Mercury News, 23 Oct. 2024
Verb
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As a preventative course of treatment, people with the blood disorder receive weekly injections of factor IX to enable their blood to coagulate, said GOSH.Julia O'Driscoll, The Week UK, theweek, 27 June 2024
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And when calcium salt is used to coagulate it, tofu is very high in calcium.Avery Hurt, Discover Magazine, 20 May 2024
Noun
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Odds and gambling platforms do not use the same methodologies used by traditional political polling, and therefore are not substitutes for political polls.Kevin Breuninger, CNBC, 28 Oct. 2024
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Instead, the union’s governing body overwhelmingly passed a substitute motion to set up voluntary forums for union members to discuss the issue.Howard Blume, Los Angeles Times, 25 Oct. 2024
Verb
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Her resilience, shaped by a complex past that’s hardened her resolve, anchors her when the community’s secrets begin to surface.Borys Kit, The Hollywood Reporter, 30 Oct. 2024
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But over the course of its third term, the party made a U-turn and hardened its stance on rapprochement with the West.Democrat-Gazette staff from wire reports, arkansasonline.com, 27 Oct. 2024
Adjective
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Both filmmakers and composers thrive on raising the out-there bar on one another, resulting in the alternate grunt track.Scott Huver, Deadline, 2 Nov. 2024
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An alternate option with good edge support is the Brooklyn Bedding EcoSleep Luxe.Ashley Zlatopolsky, Architectural Digest, 31 Oct. 2024
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Cite this Entry
“Back (up).” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/back%20%28up%29. Accessed 12 Nov. 2024.
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