source 1 of 2

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

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
Tight end update The Dolphins have interest in re-signing tight end Greg Dulcich, according to a source. Barry Jackson, Miami Herald, 7 Mar. 2026 Best known for its brilliant purple flowerhead and prickly parts, native thistle is a major source of food for pollinators. Carl R. Gold, Baltimore Sun, 7 Mar. 2026
Verb
Production has slowed over the past two months because of problems with the wells in Monterrey, Mexico, that source the water, according to a letter sent by Coca-Cola to distributors and seen by CNN. Jordan Valinsky, CNN Money, 20 Feb. 2026 For about $50k more, the company will source a donor car for you. New Atlas, 7 Feb. 2026 See All Example Sentences for source
Recent Examples of Synonyms for source
Noun
  • Go back to the very origins of Savannah pitching an alliance with her, Ozzy, Rick, and Joe.
    Dalton Ross, Entertainment Weekly, 5 Mar. 2026
  • Corsair’s origin story comes from an early 2000s garage, where Darek and best mate Andrew Webber were homebrewing, well, pretty much everything.
    David Cook, Southern Living, 4 Mar. 2026
Noun
  • Upper Basin States—Colorado, New Mexico, Utah, and Wyoming—contain headwater tributaries and receive much of their water resources through snowmelt and runoff that drain above Lee’s Ferry.
    Outside, Outside, 3 Mar. 2026
  • Low snowpack in the Colorado River headwaters threatens the hydropower production at Glen Canyon Dam, where water levels continue to drop.
    Arizona Republic, AZCentral.com, 28 Feb. 2026
Noun
  • For reference, roughly 20 million barrels of oil pass through the Strait of Hormuz each day, meaning an effort to make up for that shortfall could quickly draw down the stockpile, according to Krishnamoorti.
    Max Zahn, ABC News, 6 Mar. 2026
  • The midrange iPad refresh runs the slightly older M4 chip — for reference, the top-end iPad Pro model uses the newer M5 chip.
    Shawn Chen, Fortune, 6 Mar. 2026
Noun
  • But the lava fountains were creating trouble for neighboring communities and a highway where the volcanic fragments and ash, known as tephra, was falling.
    ABC News, ABC News, 10 Mar. 2026
  • In the center of the design sat a running water fountain that spilled out into a pool below.
    Madeline Buiano, Martha Stewart, 9 Mar. 2026
Noun
  • Culver's root produces a nonstop display of white, candelabra-like flower heads throughout the summer.
    Lynn McAlpine, Better Homes & Gardens, 5 Mar. 2026
  • Curcumin Curcumin is a natural compound found in the root of the turmeric plant that gives turmeric its yellow color and has beneficial properties.
    Jessica Swirble, Verywell Health, 5 Mar. 2026
Noun
  • North County is considered to be the cradle of skateboarding, which has grown from its rough around the edges beginnings into a billion dollar industry where icons like Tony Hawk have become global celebrities.
    Rob Nikolewski, San Diego Union-Tribune, 8 Mar. 2026
  • The integrated foam handles and foot cradles offer comfort and versatility.
    BestReviews, Mercury News, 5 Mar. 2026
Noun
  • The Defense Department has been exploring ways to harden positions and counter drones ever since the beginning of the Russia-Ukraine conflict four years ago.
    James LaPorta March 5, CBS News, 6 Mar. 2026
  • According to the announcement, the transaction is expected to close in either the end of the first financial quarter or beginning of the second quarter.
    Mason Leib, ABC News, 6 Mar. 2026

Browse Nearby Words

Cite this Entry

“Source.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/source. Accessed 12 Mar. 2026.

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