NOCUOUS Synonyms: 90 Similar and Opposite Words

nocuous

adjective

ˈnä-kyə-wəs

Definition of nocuous

as in harmful

causing or capable of causing harm hand washing is one of the easiest ways to help prevent the spread of nocuous germs

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Recent Examples of Synonyms for nocuous

Adjective

If our minds are constantly running at full throttle, potentially harmful molecules might keep piling up faster than the brain can dispose of them.

— Cody Cottier, Scientific American, 4 Nov. 2026
Earth's ozone layer acts as a planetary sunscreen, shielding humans, animals, and plants from harmful ultraviolet (UV) radiation.

— Dan Peck, ABC News, 4 Nov. 2026

Definition of harmful

Adjective

Though Awawdeh was friendly, Jontay knew that he was connected to some dangerous associates, including the Gambino crime family in New York.

— New Yorker, New Yorker, 8 Nov. 2026
But the proliferation of inexpensive first-person-view (FPV) aerial drones has made this incredibly dangerous.

— Christopher McFadden, Interesting Engineering, 8 Nov. 2026

Definition of dangerous

Adjective

Cannabis impairs cognitive functioning and can be particularly detrimental to young brains that are still developing.

— Sarah Owermohle, CNN Money, 3 Nov. 2026
So in this episode of the Outdoor Life Podcast, Sturgis will reference his decades of experience working on private land habitat as well as his time spent hunting on public ground to outline the most common and detrimental deer hunting mistakes.

— Alex Robinson, Outdoor Life, 1 Nov. 2026

Definition of detrimental

Adjective

If Uncle Sam does not change course, America’s unsustainable fiscal mess will result in adverse economic, national security, foreign relations, and domestic tranquility consequences.

— Steve H. Hanke, Fortune, 7 Nov. 2026
Police have not confirmed whether any of the children consumed the gummies or experienced any adverse effects.

— Emma Marsden, MSNBC Newsweek, 6 Nov. 2026

Definition of adverse

Adjective

As storms move east and merge into a line, damaging winds may become a greater concern.

— Newsroom Meteorologist, Austin American Statesman, 2 Nov. 2026
Large hail, damaging winds, tornadoes possible Storms are already developing across central Oklahoma, and additional activity could extend south toward our northwestern counties.

— CBS News, CBS News, 2 Nov. 2026

Definition of damaging

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nocturnal

nocuous

nod

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“Nocuous.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/nocuous. Accessed 10 Nov. 2026.

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Synonyms of nocuous

adjective

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