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Definitions

unnatural

[uhn-nach-er-uhl, -nach-ruhl] / ʌnˈnætʃ ər əl, -ˈnætʃ rəl /
ADJECTIVE
not regular; artificial
Synonyms
STRONGEST
abnormal bizarre incredible odd outlandish outrageous perverse preposterous stilted strange unusual
STRONG
affected
WEAK
aberrant anomalous assumed concocted contrary contrived ersatz extraordinary fabricated factitious false feigned forced freakish freaky imitation insincere irregular labored made-up make believe perverted phony pseudo put on staged stiff strained studied supernatural synthetic theatrical unaccountable uncanny unconforming unorthodox
Antonyms
STRONGEST
common familiar normal reasonable regular sensible standard usual
WEAK
acceptable genuine natural real

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Still, it would be hard to object to anyone pursuing initiatives to get unnatural additives out of the food supply or trying to ensure that the country is eating well.

From Salon • Feb. 19, 2026

Across the state, the annual cash payments were not associated with an increase in serious traumatic injuries or deaths from unnatural causes in the short term.

From Science Daily • Feb. 16, 2026

It’s a matter of washing off the filth—with unnatural chemicals, at that—versus never picking up the filth in the first place.

From Slate • Feb. 13, 2026

It’s built an unnatural buzz around this Patriots team.

From The Wall Street Journal • Feb. 5, 2026

Then she stopped and resumed cooking the dinner with an unnatural smile on her face as she stirred the greens, and forced herself to think about happy things.

From "The Great Santini" by Pat Conroy