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

Neon plans a 2027 theatrical release under the Creative Commons license for the open-source horror film based on a fictional secretive organization that keeps supernatural items and other harmful entities away from the public.

— Etan Vlessing, HollywoodReporter, 30 Sep. 2026
Executives from six major AI companies signed a one-page document pledging to monitor their models and prevent harmful uses such as hacking.

— Brittney Melton, NPR, 30 Sep. 2026

Definition of harmful

Adjective

Meanwhile, the financial clout of the industry has grown considerably, resulting in a new, more dangerous problem.

— Kent Sepkowitz, STAT, 5 Oct. 2026
Attempting to de-escalate the scare, Rospotrebnadzor declared the regional sanitary situation stable after secondary testing showed no traces of dangerous pathogens linked to Shipilova’s research.

— Mrigakshi Dixit, Interesting Engineering, 5 Oct. 2026

Definition of dangerous

Adjective

That's on the heels of a 41-7 blowout at Northwestern that was ugly enough for Deion Sanders to dismiss a handful of players for conduct detrimental to the team days later.

— Amber Harding OutKick, FOXNews.com, 30 Sep. 2026
To that point, Carter wrote that if the NFL’s relationship with Fanatics were detrimental to the marketplace, there would be higher prices for consumers.

— Michael McCann, Sportico.com, 30 Sep. 2026

Definition of detrimental

Adjective

Retaliation is described as an adverse employment action connected to an activity protected by a law under its jurisdiction.

— William Jones, Sacbee.com, 2 Oct. 2026
Eating Sweetened Foods With Protein Eating protein alongside sugary snacks can help stabilize your blood sugar and minimize the spikes that lead to a host of adverse health effects.

— Kelly Burch, Verywell Health, 2 Oct. 2026

Definition of adverse

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.

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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 8 Oct. 2026.

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Synonyms of nocuous

adjective

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