back 1 of 4

Definition of backnext
1
as in ago
earlier than the present time that's longer back than I can remember

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2
3
1
as in rear
a behind part or surface the back of the page was blank

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2
as in jugular
a vulnerable point a candidate needing a loyal aide who can be relied upon to always watch his back

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back

3 of 4

verb

1
2
3
as in to reinforce
to provide evidence or information for (as a claim or idea) the author needs to back her thesis with more facts

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back

4 of 4

adjective

as in hind
being at or in the part of something opposite the front part she carried all the presents in the back door, as the children were playing in the front yard

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Synonym Chooser

How is the word back different from other verbs like it?

Some common synonyms of back are advocate, champion, support, and uphold. While all these words mean "to favor actively one that meets opposition," back suggests supporting by lending assistance to one failing or falling.

refusing to back the call for sanctions

When can advocate be used instead of back?

While the synonyms advocate and back are close in meaning, advocate stresses urging or pleading.

advocated prison reform

Where would champion be a reasonable alternative to back?

The words champion and back are synonyms, but do differ in nuance. Specifically, champion suggests publicly defending one unjustly attacked or too weak to advocate his or her own cause.

championed the rights of children

When might support be a better fit than back?

In some situations, the words support and back are roughly equivalent. However, support is least explicit about the nature of the assistance given.

supports waterfront development

When is it sensible to use uphold instead of back?

The words uphold and back can be used in similar contexts, but uphold implies extended support given to something attacked.

upheld the legitimacy of the military action

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of back
Adverb
But the news organizations pushed back against those summons, and the Justice Department withdrew them. — Chad De Guzman, Time, 15 Oct. 2026 Stan’s dad, Randy (who is now the size of his son after going to Sephora and thus is forced to enroll back in school) does beat up Ike’s opponent, though, meaning his looksmaxxed face is no longer. — Payton Turkeltaub, Variety, 15 Oct. 2026
Noun
But Fitzgerald has moved from his typical ball-hawking safety role due to injuries to other defensive backs this year. — Adam Lichtenstein, Sun Sentinel, 18 Oct. 2026 The ball was snapped with five seconds to go and Bowling Green had six defensive backs lined up on the goal line. — ABC News, 17 Oct. 2026
Verb
The acquisition follows earlier textile deals backed by Greybull. — Alexandra Harrell, Footwear News, 19 Oct. 2026 The apartment development, between North Broadway and the Fox River downtown and backed by DAC developments, is set to be a 343,421-square-foot building with 258 apartments. — Addison Wright, Chicago Tribune, 18 Oct. 2026
Adjective
Incumbent Luiz Inácio Lula da Silva had avoided debating challenger Flávio Bolsonaro — the son of a former president jailed for staging a coup — but the rightist’s first-round victory put the president on the back foot. — semafor.com, 19 Oct. 2026 Tucked in a slit in the back cover is a Cabello’s receipt for six rifles, ten smoke grenades, two hunting knives, a hundred zip ties, three KitKats. — George Saunders, New Yorker, 18 Oct. 2026 See All Example Sentences for back
Recent Examples of Synonyms for back
Adverb
  • Eons ago a star up to 30 times the mass of our sun collapsed and perished, forming a black hole.
    — Robin George Andrews, Scientific American, 20 Oct. 2026
  • Japan's ties with China came under strain a year ago when Japanese Prime Minister Sanae Takaichi said Chinese military action on Taiwan could justify Japanese involvement.
    — Arkansas Online, Arkansas Online, 20 Oct. 2026
Adverb
  • Water waves caused by, say, 50 stones thrown into a pond have a wavelength of a few centimeters and oscillate with a frequency of around 10 hertz (Hz).
    — Philipp Strasberg, Scientific American, 20 Oct. 2026
  • Previous estimates of her net worth have ranged around $72 million.
    — Mathew Miranda, Sacbee.com, 20 Oct. 2026
Adverb
  • Planet 1 pulls Planet 2 backward, stealing some of the latter’s orbital energy.
    — Phil Plait, Scientific American, 16 Oct. 2026
  • In my experience, the instinct to slow down and get every word perfect is exactly backwards under this kind of compression.
    — Ronn Torossian, Forbes.com, 16 Oct. 2026
Noun
  • Upgrading to the Thrust Variant requires a $245,000 follow-up payment and adds SpaceX cold-gas rear thrusters alongside an active multi-mode fan system for downforce, cutting acceleration down to under a second.
    — Mrigakshi Dixit, Interesting Engineering, 16 Oct. 2026
  • Storyteller Overland Storyteller also enhances the rear’s role as a storage garage, adding MOLLE-style organizational panels to the underside of the bed.
    — New Atlas, New Atlas, 15 Oct. 2026
Noun
  • Becerra goes for the jugular against Hilton by invoking Huntington Beach!
    — Los Angeles Times, Los Angeles Times, 1 Oct. 2026
  • Even Rodrigo, the almost too-good student who should make a mess someday, went total sprite, toying with everyone’s jugular.
    — Lauren Michele Jackson, New Yorker, 2 Sep. 2026
Verb
  • Finally, Louise herself, who had since left the region and was now twice divorced, returned to advocate for the historical importance of her old home, which never did receive official landmark status, locally or otherwise.
    — Christopher Borrelli, Chicago Tribune, 18 Oct. 2026
  • Human rights lawyer Rosy Auguste Ducena, who advocates for the rights of victims of violence, says the Haitian public is fed up with the slow pace of change.
    — Nick Paton Walsh, CNN Money, 17 Oct. 2026
Verb
  • Along with Williams, at least 14 other people, many of them friends and family of the escapees, were arrested and accused of aiding in the escape, including by providing food, cash, transport and shelter.
    — ABC News, ABC News, 15 Oct. 2026
  • Here, the fabric’s waterproofing is aided by a light water-repellent finish and thorough internal seam taping, a technical manufacturing process rarely attempted by factories outside of southeast Asia.
    — Daniel Varghese, Time, 15 Oct. 2026
Verb
  • Matt Schnaars, president of platform distribution and partnerships for NBCUniversal, reinforced Shapiro’s observations in a separate session.
    — Leo Barraclough, Variety, 15 Oct. 2026
  • The audience response has reinforced interest in experiencing independent films on the big screen and helped inform ABFF’s expansion into theatrical distribution.
    — Brent Lang, IndieWire, 14 Oct. 2026

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Cite this Entry

“Back.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/back. Accessed 21 Oct. 2026.

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