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
This approach aims to reduce dependence on global raw material sources. — Prabhat Ranjan Mishra, Interesting Engineering, 19 Sep. 2026 Every once in a while, there’s a perfect combination of source material and creatives, and that’s what happened when King, De Palma, and Sissy Spacek combined forces here. — Brian Tallerico, Vulture, 19 Sep. 2026
Verb
Its leaders focused not only on what customers wanted to buy, but also on how Walmart could source, move and replenish those products efficiently at scale. — Joanna Riley, Forbes.com, 9 Sep. 2026 Brazil also has a complete fiber-to-fashion supply chain and can source most key raw materials domestically, significantly reducing dependence on Asia. — Sj Studio, Footwear News, 2 Sep. 2026 See All Example Sentences for source
Recent Examples of Synonyms for source
Noun
  • Today, the inn is particularly popular with US history buffs thanks to the town’s origins, as well as cyclists coming from the nearby Empire State Trail.
    — Condé Nast, Condé Nast Traveler, 23 Sep. 2026
  • The core Texas Jewish families traced their origins to Western Europe.
    — Literary Hub, Literary Hub, 22 Sep. 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, Polo’s maximum winds were only 50 mph about 24 hours before.
    — Sean Macaday, Sacbee.com, 22 Sep. 2026
  • Calvin Klein wrote the playbook on a form of minimalism that other designers like the Row, Khaite and Toteme arguably do better now, reducing the brand to a reference on Carolyn Bassette-Kennedy moodboards.
    — Fiona Sinclair Scott, CNN Money, 22 Sep. 2026
Noun
  • Lourdes water is free to access from the sanctuary’s taps and drinking fountains.
    — ABC News, ABC News, 24 Sep. 2026
  • On the nearly 1-acre lot are mature trees and a flat backyard with a stone fireplace, patio, and fountain.
    — The Week US, TheWeek, 21 Sep. 2026
Noun
  • Where loyalty’s root lies in law, wafadari’s lies in promise.
    — Literary Hub, Literary Hub, 24 Sep. 2026
  • After lying dormant for over twenty years, the property has been completely renovated to make the space feel tasteful, modern, and comfortable while continuing to pay tribute to its deep archival roots.
    — Condé Nast, Condé Nast Traveler, 23 Sep. 2026
Noun
  • 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
  • The Massachusetts Bay is a beautiful place to have a breakdown, and the setting serves as a tender cradle for high school history teacher Artie Dam to have his whole world turned upside down.
    — Kat Chen, Condé Nast Traveler, 23 Sep. 2026
Noun
  • One thing that has changed since the beginning of the charter is the relationship between cabinmates Kat and Gen, who used to be close until Gen got a little too comfortable.
    — Rafaela Bassili, Vulture, 22 Sep. 2026
  • That equipment ultimately failed to lure back shoppers and the company conducted another round of layoffs at the beginning of the year.
    — Jordan Valinsky, CNN Money, 22 Sep. 2026

Browse Nearby Words

Cite this Entry

“Source.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/source. Accessed 27 Sep. 2026.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!