UNNATURAL Synonyms: 172 Similar and Opposite Words

Q: How is the word 'unnatural' distinct from other similar adjectives?

The words anomalous and irregular are common synonyms of unnatural . While all three words mean "not conforming to rule, law, or custom," unnatural suggests what is contrary to nature or to principles or standards felt to be essential to the well-being of civilized society. // prisoners treated with unnatural cruelty

Q: When could 'anomalous' be used to replace 'unnatural'?

The meanings of anomalous and unnatural largely overlap; however, anomalous implies not conforming to what might be expected because of the class or type to which it belongs or the laws that govern its existence. // her drive made her an anomalous figure in a sleepy organization

Q: When is 'irregular' a more appropriate choice than 'unnatural'?

The words irregular and unnatural are synonyms, but do differ in nuance. Specifically, irregular implies not conforming to a law or regulation imposed for the sake of uniformity in method, practice, or conduct. // concerned about his irregular behavior

unnatural

adjective

ˌən-ˈna-chə-rəl

Definition of unnatural

as in abnormal

departing from some accepted standard of what is normal the documentary evinces an unnatural obsession with the gruesome details of the disaster

Synonyms & Similar Words

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Antonyms & Near Antonyms

as in strained

lacking in natural or spontaneous quality just before the debate, the candidates flashed unnatural smiles for the cameras

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How is the word unnatural distinct from other similar adjectives?

The words anomalous and irregular are common synonyms of unnatural. While all three words mean "not conforming to rule, law, or custom," unnatural suggests what is contrary to nature or to principles or standards felt to be essential to the well-being of civilized society.

prisoners treated with unnatural cruelty

When could anomalous be used to replace unnatural?

The meanings of anomalous and unnatural largely overlap; however, anomalous implies not conforming to what might be expected because of the class or type to which it belongs or the laws that govern its existence.

her drive made her an anomalous figure in a sleepy organization

When is irregular a more appropriate choice than unnatural?

The words irregular and unnatural are synonyms, but do differ in nuance. Specifically, irregular implies not conforming to a law or regulation imposed for the sake of uniformity in method, practice, or conduct.

concerned about his irregular behavior

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 unnatural Some deepfakes still have telltale flaws such as unnatural facial movements, lip-sync glitches, robotic speech or awkward pauses — but the technology is rapidly improving, a spokesperson for the organization said. — Emily Elconin For Cnn, CNN Money, 15 Sep. 2026 Another ensemble member is juggling nearby as someone spins in a giant hoop at an unnatural speed. — Jenelle Riley, Los Angeles Times, 14 Sep. 2026 Why the dead girl’s computer glows with an unnatural brightness whenever the lights turn off? — David Ehrlich, IndieWire, 10 Sep. 2026 When my husband comes home and stands in front of the refrigerator stuffed with bags of mulberry leaves, his face takes on an unnatural look. — Jonathan Flint, Harpers Magazine, 1 Sep. 2026 See All Example Sentences for unnatural

Recent Examples of Synonyms for unnatural

Adjective

Its integrated thermal, visual, acoustic, and gas sensors detect overheating, leaks, abnormal noise, and equipment wear, logging every reading directly to its corresponding asset.

— Prabhat Ranjan Mishra, Interesting Engineering, 30 Oct. 2026
This finding hints at potential applications in neurodevelopmental conditions that involve abnormal connectivity, such as schizophrenia, but also those involving memory impairment, such as dementia.

— Simon Makin, Scientific American, 29 Oct. 2026

Definition of abnormal

Adjective

However, royal commentator Richard Fitzwilliams told Fox News Digital that Harry's willingness to publicly discuss his strained family relationships only makes the royals more reluctant to extend an olive branch.

— Stephanie Nolasco , Ashley Papa, FOXNews.com, 26 Oct. 2026
Other governments around the world are also feeling pressure because of high debt loads and strained budgets, including the United States.

— Stan Choe, Los Angeles Times, 26 Oct. 2026

Definition of strained

Adjective

The men stopped short of signing the oath required for vouching, but Moriarty said that giving false names and starting the process was enough to justify the felony charges.

— Mark Vancleave, Los Angeles Times, 29 Oct. 2026
Bhengura faces a maximum of five years in prison on the false statements of citizenship in order to register to vote count and a maximum of one year in prison on the voting by an alien in a federal election count.

— Emerson Clarridge, Fort Worth Star-Telegram, 29 Oct. 2026

Definition of false

Adjective

Key Takeaways These artificial channels are up to five times more selective for lithium, offering a simpler way to extract the critical battery material.

— Neetika Walter, Interesting Engineering, 28 Oct. 2026
Stocks in the artificial-intelligence industry led Wall Street higher on Tuesday, as their yo-yo moves swing back upward.

— Stan Choe, Los Angeles Times, 27 Oct. 2026

Definition of artificial

Adjective

No mechanical failure, operational error, or other contributing factor has been identified.

— Neetika Walter, Interesting Engineering, 30 Oct. 2026
Yao also thinks that there may be more promising sources of energy to harvest from than mechanical motion, which requires implantation in parts of the body where motion is constant.

— Edd Gent, IEEE Spectrum, 29 Oct. 2026

Definition of mechanical

Adjective

The team’s 23-year-old in-house expert in men’s tailoring, Mario Vidal, also cut Carlos’s jackets to be wide on the shoulders and tight at the waist, adding further drama with exaggerated lapels.

— Elaina Patton, Vogue, 25 Oct. 2026
In a series of TikTok videos made yesterday, North West debuted an exaggerated prosthetic chin and slick-black bob, tagging the Bad Girls star.

— Isabella Albaig, Vulture, 23 Oct. 2026

Definition of exaggerated

Adjective

While policymakers debate new privacy laws, doctors such as Julien Cavanagh say they are left to fix the mess that targeted online ads for fake cures create for patients’ health.

— Washington Post, Washington Post, 28 Oct. 2026
Criminals can imitate those messages to create panic and lure people toward fake login pages.

— Kurt Knutsson, FOXNews.com, 28 Oct. 2026

Definition of fake

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unnamed

unnatural

unnaturally

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“Unnatural.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unnatural. Accessed 30 Oct. 2026.

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