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

Nevertheless, there are several measures that gardeners can take to keep themselves, their children, plants and produce safe from potentially harmful contaminants stemming from the fire.

— Christopher Buchanan, Los Angeles Times, 8 July 2026
Advertisement If sleep deprivation is harmful, do studies where people are asked to sleep longer show a beneficial effect?

— Veronique Greenwood, Time, 8 July 2026

Definition of harmful

Adjective

Teri handled higher-value finds and saw that potentially dangerous items – like firearms and knives – got to the local sheriff’s office.

— Alisha Ebrahimji, CNN Money, 6 July 2026
Looking back through the sequence, Brazil have good numbers back and there is little need for anyone to overcommit — but a lazy tackle from behind leads to a free kick in a dangerous area.

— Mark Carey, New York Times, 6 July 2026

Definition of dangerous

Adjective

Dauvin warns that piling obligations onto streamers could be detrimental to the French film and television landscape.

— Elsa Keslassy, Variety, 6 July 2026
Salted pasta water can be detrimental to soil and plant health, and even unsalted water can promote the growth of unwanted fungi.

— Lauren Landers, Better Homes & Gardens, 4 July 2026

Definition of detrimental

Adjective

These conditions can increase your vulnerability to adverse effects from poor air quality.

— Southern California Weather Report, Oc Register, 4 July 2026
Valentine also testified that the FDA encourages infant formula companies to send in all adverse event reports and that nothing prevented Mead Johnson from doing so.

— David Hilzenrath, USA Today, 2 July 2026

Definition of adverse

Adjective

Of all the bad policy coming out from Washington today, the CCCA may be the most damaging to their day-to-day survival.

— Raquel Mitchell, Boston Herald, 8 July 2026
The optics have been particularly damaging for the country’s image within the global mining industry.

— Alexis Akwagyiram, semafor.com, 8 July 2026

Definition of damaging

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 15 Jul. 2026.

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Synonyms of nocuous

adjective

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