UNTREATED Synonyms: 25 Similar and Opposite Words

untreated

adjective

ˌən-ˈtrē-təd

Definition of untreated

as in crude

being such as found in nature and not altered by processing or refining untreated wool

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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 untreated This is considered the most serious version of plague, and is always fatal if left untreated. — News Editor, CBS News, 6 Oct. 2026 The fatality rate of pneumonic plague is nearly 100% if left untreated, and about 50% if treated. — Elsa Ohlen, CNBC, 6 Oct. 2026 Part of it was due to returning vets, who were very alienated and were suffering from untreated PTSD and were ripe targets for recruitment by white supremacist groups that look for people with these kinds of skills. — Elisabeth Garber-Paul, Rolling Stone, 3 Oct. 2026 Discharging untreated whey can deplete oxygen in waterways and damage aquatic ecosystems. — New Atlas, 3 Oct. 2026 See All Example Sentences for untreated

Recent Examples of Synonyms for untreated

Adjective

In August, specialists at Washington Dulles International Airport seized about 440 pounds of unprocessed cotton from a family arriving from Afghanistan.

— Alexandra Harrell, Footwear News, 16 Oct. 2026
Johnson’s announcement, shared first with CNBC, comes a little more than a week after The Texas Tribune and VoteBeat reported that the DPS error caused at least 200,000 voter registration applications to go unprocessed.

— Justin Papp, CNBC, 2 Oct. 2026

Definition of unprocessed

Adjective

Shooting stars become visible when particles of the ancient comet collide with our planet's atmosphere at 147,600 miles per hour (237,539 kilometers per hour), vaporizing in a spectacular display of natural fireworks.

— Anthony Wood, Space.com, 17 Oct. 2026
This part of South America often gets heavy rain during El Niño, a natural climate phenomenon in which warmer-than-usual waters in the Pacific Ocean scramble weather patterns around the world.

— Arkansas Online, Arkansas Online, 17 Oct. 2026

Definition of natural

Adjective

The emotions are a little less raw now — this celebration of life, after all, wasn’t held until 141 days after Busch’s death.

— Scott Fowler, Charlotte Observer, 10 Oct. 2026
The outstanding artwork of the exhibition, Goldin’s slideshow, largely devoted to candid portraits of friends, many shot in her Bowery loft, remains stunningly raw.

— J. Hoberman, ARTnews.com, 9 Oct. 2026

Definition of raw

Adjective

The native habitat for eastern box turtles, a subspecies of the common box turtle, includes Maine to Florida and the Great Lakes to Texas.

— Stuart Miller, Los Angeles Times, 12 Oct. 2026
Nix is a native Californian who jumped at the chance to spend some time shooting there.

— Max Goldbart, Deadline, 12 Oct. 2026

Definition of native

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untraversed

untreated

untrendy

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“Untreated.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/untreated. Accessed 17 Oct. 2026.

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Synonyms of untreated

adjective

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