Definition of sourcenext
1
2
as in headwater
the beginning part of a stream 19th-century explorers who sought the source of the Nile

Synonyms & Similar Words

3
as in reference
something mentioned in a text as providing related and especially supporting information the professor asked the students to have at least five different sources for their papers

Synonyms & Similar Words

source

2 of 2

verb

Synonym Chooser

How is the word source distinct from other similar nouns?

Some common synonyms of source are inception, origin, and root. While all these words mean "the point at which something begins its course or existence," source applies more often to the point where something springs into being.

the source of the Nile
the source of recurrent trouble

When is inception a more appropriate choice than source?

While in some cases nearly identical to source, inception stresses the beginning of something without implying causes.

the business has been a success since its inception

When is it sensible to use origin instead of source?

The words origin and source are synonyms, but do differ in nuance. Specifically, origin applies to the things or persons from which something is ultimately derived and often to the causes operating before the thing itself comes into being.

an investigation into the origin of baseball

When can root be used instead of source?

While the synonyms root and source are close in meaning, root suggests a first, ultimate, or fundamental source often not easily discerned.

the real root of the violence

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 source
Noun
Online sellers, street vendors and WhatsApp and Telegram groups have also stepped in to fill gaps left by state pharmacies, which for decades were the main source of subsidized medicines. — ABC News, 11 Oct. 2026 Shortly after the report was published, sources debunked it, stating that Harry and Meghan have no intention of apologizing to the royal family. — Allison Degrushe, StyleCaster, 11 Oct. 2026
Verb
As the project grows, it is set to employ up to about 100 people — and Haji said the company aims to source talent locally as much as possible. — Sarah Cutler, Idaho Statesman, 19 Sep. 2026 Many artworks are inconceivable without artists being able to source old books. — Brian Boucher, ARTnews.com, 17 Sep. 2026 See All Example Sentences for source
Recent Examples of Synonyms for source
Noun
  • For anyone who spends a lot of time online, the series’s AI origins are hard to miss.
    — Britta Miller, The Washington Examiner, 14 Oct. 2026
  • Gerwig explained that the classic-rock warhorse matches her vision of the film, which adapts Lewis’ origin story for Narnia.
    — Brian Hiatt, Rolling Stone, 13 Oct. 2026
Noun
  • According to the post, Kentucky State Police Aviation saw smoke in the area, and wardens and search and rescue personnel were able to access the location, near the headwaters of Cave Run Lake, using a boat.
    — Caroline Neal, Louisville Courier Journal, 11 Sep. 2026
  • Others, like salmon, return upstream via Metro-North or the Long Island Rail Road to the suburban headwaters in which they were born, in order to spawn.
    — Christopher Bonanos, Curbed, 2 Sep. 2026
Noun
  • For reference, an extrait’s concentration is usually around 20 to 30 percent.
    — Kathryn Hopkins, Footwear News, 13 Oct. 2026
  • There’s a couple ‘12 Monkeys’ references scattered everywhere, here and there, for those who know.
    — Alex Zalben, IndieWire, 13 Oct. 2026
Noun
  • To the right, artificial houseplants stand in a currently dry fountain bedecked in blue light, and presided over by statue holding a candelabra-style light fixture like a torch.
    — Adam Harrington, CBS News, 16 Oct. 2026
  • Nearby is Mastro's steakhouse, and right outside is a canopy of majestic oak trees and cascading fountains.
    — Condé Nast, Condé Nast Traveler, 16 Oct. 2026
Noun
  • Each work takes its cues from Vodou spiritual practices in Haiti that are grounded in their African roots.
    — Hikmat Mohammed, ARTnews.com, 14 Oct. 2026
  • According to Snideman, the roots of the problem go back to when drivers paid vehicle licensing fees that helped fund critical services in San Mateo County.
    — Maddie White, CBS News, 14 Oct. 2026
Noun
  • According to tradition, the day after she was baptized, her cradle was surrounded by a mysterious swarm of white bees, which entered her mouth, but didn't harm her or even wake her up.
    — Adam Harrington, CBS News, 6 Oct. 2026
  • This ecosystem has been the cradle of many major innovative high-tech companies, as well as those sparking innovation and growth in other sectors.
    — Andrew McAfee, Foreign Affairs, 23 Sep. 2026
Noun
  • So, Ohtani kept trying to work his way back to the mound for weeks after receiving a lubricating Orthovisc injection in his knee at the beginning of the All-Star break.
    — Maddie Lee, Los Angeles Times, 14 Oct. 2026
  • The October introduction marks the beginning of a broader evolution for Lune+Aster, with additional innovation planned across complexion, eye and lip categories through 2027.
    — Kathryn Hopkins, Footwear News, 13 Oct. 2026

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Cite this Entry

“Source.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/source. Accessed 18 Oct. 2026.

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