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
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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
Synonyms & Similar Words
1
as in to testify (to)
Related Words
Dissimilar Words
as in makeshift
Related Words
Dissimilar Words
Example Sentences
Examples are automatically compiled from online sources to
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Recent Examples of back (up)
PC Magazine, 14 July 2025
For this exercise, one player is listed as the backup at each position.
—Parker Gabriel, Denver Post, 13 July 2025
When healthy, Spector spent the entire 2024 season as Bernard’s primary backup, though a couple of issues continued to pop up.
—Joe Buscaglia, New York Times, 11 July 2025
Most majors have a video review system as a backup to any close calls.
—Chris Branch, New York Times, 7 July 2025
See All Example Sentences for back (up)
Adjective
With additional features like data-broker opt-out, webcam protection, and online backup, Norton 360 Deluxe offers a complete package for users looking to safeguard their digital lives across multiple devices.
—PC Magazine, 14 July 2025
For this exercise, one player is listed as the backup at each position.
—Parker Gabriel, Denver Post, 13 July 2025
When healthy, Spector spent the entire 2024 season as Bernard’s primary backup, though a couple of issues continued to pop up.
—Joe Buscaglia, New York Times, 11 July 2025
Most majors have a video review system as a backup to any close calls.
—Chris Branch, New York Times, 7 July 2025
See All Example Sentences for back (up)
Recent Examples of Synonyms for back (up)
Noun
-
Meanwhile, across the street, The Hitch General Store delights visitors with nostalgic treats such as Goo Goo Clusters, Moon Pies, jams, honey, and classic bottled sodas.—
Korrin Bishop,
Southern Living,
13 July 2025
-
Meghan Markle's As Ever online shop has now sold out in minutes on three occasions, leaving fans scrambling to get hold of her products, from jam to rosé wine.—
Jack Royston,
MSNBC Newsweek,
10 July 2025
Noun
-
The Rays have potential replacements in Joe Boyle and rehabbing ace Shane McClanahan.—
Marc Topkin,
The Orlando Sentinel,
20 July 2025
-
Either way, Powell's replacement could have a significant effect on financial markets.—
James Bickerton,
MSNBC Newsweek,
19 July 2025
Verb
-
While there were a large quotient of natural or simply gelled looks, others took an edgier tack.—
Jennifer Weil,
Footwear News,
8 July 2025
-
Plans gelled after the Buckeye and Bluegrass states signed their current agreement in February 2022 and then-President Joe Biden stood on the banks of the Ohio River the next January to tout the federal government’s $1.6 billion commitment to the project.—
Patricia Gallagher Newberry,
The Enquirer,
2 July 2025
Noun
-
But what really rankles is the idea that these digital interlocutors are a plausible substitute for real friends or family.—
Paul Bloom,
New Yorker,
14 July 2025
-
The call is for more person-to-person clienteling, which can be aided by AI, yet AI is no substitute for the personal connection.—
Pamela N. Danziger,
Forbes.com,
14 July 2025
Verb
-
Foreign Flavor The number of international All-Stars is growing, with 365 born out of the United States.—
Dan Schlossberg,
Forbes.com,
14 July 2025
-
Ironic from a country born out of revolting against taxation without representation.—
Jose Antonio Vargas,
Time,
4 July 2025
Verb
-
Within hours the pool would coagulate into electric-blue slush, like a gas station Slurpee.—
Alec Luhn,
Scientific American,
20 May 2025
-
That familiar lump of expectation coagulated in my stomach and throat.—
Thomas Weddle,
Outdoor Life,
17 Apr. 2025
Verb
-
Iran rejects tight restrictions on its nuclear program and has hardened its stance after Israel and the U.S. targeted its nuclear facilities in June.—
Amira El-Fekki,
MSNBC Newsweek,
8 July 2025
-
They’d be hardened to anything that life and work threw their way.—
Jodie Cook,
Forbes.com,
7 July 2025
Adjective
-
Joscelyn Roberson 2024 Olympic alternate Joscelyn Roberson also heads to Chicago fresh off an impressive NCAA gymnastics season.—
Caroline Price,
Forbes.com,
16 July 2025
-
Hulsizer will become the team’s alternate governor, a role held by Eduardo Margain since 2019.—
Eben Novy-Williams,
Sportico.com,
14 July 2025
Cite this Entry
“Back (up).” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/back%20%28up%29. Accessed 25 Jul. 2025.
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