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
Synonyms & Similar Words
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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Example Sentences
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Recent Examples of back (up)
Rocco Parascandola, New York Daily News, 3 Feb. 2026
Eichenberg was pleased to sign a one-year contract and to be able to continue his career with the team that drafted him, in a role that likely would include serving as the top backup at the three interior line positions.
—Barry Jackson, Miami Herald, 3 Feb. 2026
Prabhat Ranjan Mishra, Interesting Engineering, 11 Feb. 2026
Carrying personal safety alarms and backup portable chargers can help travelers in a pinch, and investing in a good lock is key.
—Michael Cappetta, Travel + Leisure, 11 Feb. 2026
See All Example Sentences for back (up)
Noun
The cops were rushing to assist a fellow officer, who requested backup after a prisoner inside the psych ward began resisting arrest, the sources said.
—Rocco Parascandola, New York Daily News, 3 Feb. 2026
Eichenberg was pleased to sign a one-year contract and to be able to continue his career with the team that drafted him, in a role that likely would include serving as the top backup at the three interior line positions.
—Barry Jackson, Miami Herald, 3 Feb. 2026
Adjective
The 130,000-square-foot facility on Cape Canaveral Space Force Station will include eight separate lab spaces, nine heavy-lift cranes, a backup generator, and administrative and other support spaces.
—Prabhat Ranjan Mishra, Interesting Engineering, 11 Feb. 2026
Carrying personal safety alarms and backup portable chargers can help travelers in a pinch, and investing in a good lock is key.
—Michael Cappetta, Travel + Leisure, 11 Feb. 2026
See All Example Sentences for back (up)
Recent Examples of Synonyms for back (up)
Verb
-
Here, Segall abandons all instruments to concentrate on vocals, leaving his session players to gel into a real band.—
Stephen Thomas Erlewine,
Pitchfork,
30 Jan. 2026
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There was no major incident that caused a rift between Kelly Osbourne and her older sister Aimee, the two simply just don't gel.—
Stephanie Sengwe,
PEOPLE,
20 Jan. 2026
Noun
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Drawing from much more than the caustic hardcore the group have made their name on, Man Bites Dog throws jock jams, late-aughts electro-pop, and industrial into a huge Margaritaville-sized blender.—
Nina Corcoran,
Pitchfork,
13 Feb. 2026
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The Best Way To Store Opened Jam While unopened jars of jam can be safely stored in a cool, dry cupboard or pantry, opened jars should always be refrigerated.—
Katie Rosenhouse,
Southern Living,
12 Feb. 2026
Noun
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The results point to a future where things like knee braces, exoskeletons, or even joint replacements could be tailored to an individual’s exact joint motion.—
Prabhat Ranjan Mishra,
Interesting Engineering,
9 Feb. 2026
-
At 41, the 2010 Olympic downhill champion was in the midst of a once-unthinkable career comeback after undergoing knee replacement surgery on her right leg in 2024.—
Sara Germano,
Sportico.com,
8 Feb. 2026
Adjective
-
And a couple took their time weaving through the makeshift garden.—
Andrea Castillo,
Los Angeles Times,
6 Feb. 2026
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Despite the internet shutdown, footage of many horrifying scenes began to emerge, including images of a makeshift morgue set up outside the Legal Medicine Organization (a state forensic institute) in Kahrizak, near Tehran, after the facility’s morgue overflowed with bodies.—
Hamid Kashani,
Twin Cities,
5 Feb. 2026
Verb
-
Expectations that the tariffs would drive inflation much higher, for instance — an eventuality that might actually have a genuine effect on the economy and therefore on market values — haven’t been borne out.—
Business Columnist,
Los Angeles Times,
6 Feb. 2026
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Bishop Ken Carter, the resident bishop of the Western North Carolina Conference of the United Methodist Church, said the ad was born out of a grassroots desire from congregants who saw what was happening in Charlotte and across the country and wanted to take a stand.—
Briah Lumpkins,
Charlotte Observer,
4 Feb. 2026
Verb
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Do not use warm or hot water since this can actually cause the blood to coagulate.—
Ashlyn Needham,
Southern Living,
20 Jan. 2026
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The honey was too thick and caused the sauce to kind of coagulate.—
Brittany Loggins,
Bon Appetit Magazine,
17 Dec. 2025
Noun
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Among the recovered materials, dysprosium, ytterbium, and erbium are considered high-value due to strong demand and limited substitutes, while yttrium and gadolinium are widely used in electronics, lighting, and healthcare.—
Neetika Walter,
Interesting Engineering,
11 Feb. 2026
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The sweet side using natural flavors are the Rafaello crepe with coconut, Nutella and strawberries, while the Valentine’s crepe substitutes crème patissiere for the coconut.—
George Castle,
Chicago Tribune,
10 Feb. 2026
Adjective
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American officials are seeking to press for an end to Iran’s nuclear enrichment program, curbs on ballistic missiles and a halt to support for proxy groups such as Hamas and Hezbollah.—
Ashley J. DiMella,
FOXNews.com,
6 Feb. 2026
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The article outlines five key predictions for the future of proxy voting.—
Sheryl Estrada,
Fortune,
5 Feb. 2026
Cite this Entry
“Back (up).” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/back%20%28up%29. Accessed 14 Feb. 2026.
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