unnatural

adjective

un·​nat·​u·​ral ˌən-ˈna-chə-rəl How to pronounce unnatural (audio)
-ˈnach-rəl
Synonyms of unnaturalnext
1
: not being in accordance with nature or consistent with a normal course of events
It seemed unnatural to keep the bird in a cage.
2
a
: not being in accordance with normal human feelings or behavior
an unnatural devotion to money
b
: lacking ease and naturalness : contrived
her manner was forced and unnatural
c
: inconsistent with what is reasonable or expected
an unnatural alliance
unnaturally adverb
Choose the Right Synonym for unnatural

irregular, anomalous, unnatural mean not conforming to rule, law, or custom.

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

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

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

Examples of unnatural in a Sentence

It seems unnatural to keep the bird in a cage. She has an unnatural obsession with money. Her smile looked forced and unnatural.
Recent Examples on the Web
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.
Her parents refuse to see that there is something unnatural about their new baby boy and that an evil other presence haunts their stately home. Tanya Fedak, Variety, 26 Aug. 2026 The researchers say the approach could help overcome limitations of existing humanoid control systems, which often require extensive fine-tuning or produce rigid, unnatural movements. Jijo Malayil, Interesting Engineering, 26 Aug. 2026 An endless, unnatural rain has sealed them, and apparently their neighbours, inside their homes. Solitaire Townsend, Forbes.com, 23 Aug. 2026 Standard joystick controls force an operator to translate every wrist flick into cabin rotation, arm extension, or bucket movement, an unnatural mapping that engineers call a mental model. New Atlas, 21 Aug. 2026 See All Example Sentences for unnatural

Word History

First Known Use

14th century, in the meaning defined at sense 1

Time Traveler
The first known use of unnatural was in the 14th century

Browse Nearby Words

Cite this Entry

“Unnatural.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unnatural. Accessed 29 Aug. 2026.

Kids Definition

unnatural

adjective
1
: not following nature or a normal course of events
2
a
: not being in agreement with normal feelings or behavior
b
: lacking ease and naturalness
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