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

Child development experts have noted teenagers are more susceptible to social comparison than adults, so products that reward popularity can be more harmful to their mental health.

— ABC News, ABC News, 19 Aug. 2026
Beneficial bacteria also provide colonization resistance, competing with harmful microbes for nutrients and attachment sites while producing substances that inhibit their growth.

— Encyclopedia Britannica, Encyclopedia Britannica, 19 Aug. 2026

Definition of harmful

Adjective

On Sunday, storms brought dangerous flash flooding to the area around the Aspen Acres burn scar.

— Christa Swanson, CBS News, 17 Aug. 2026
That makes the world a more dangerous place, where a mistake by just one actor could ignite a regional firestorm, with a US military weakened by Iran unable to ensure American security.

— Brad Lendon, CNN Money, 17 Aug. 2026

Definition of dangerous

Adjective

These can be detrimental to a business owner and the success of their businesses.

— Simone Lundquist, Forbes.com, 10 Aug. 2026
Both receptors are common on human airway cells High levels of stimulation are detrimental, the researchers wrote, whereas moderate levels indicating small amounts of time spent in cowsheds seemed to be beneficial.

— Baltimore Sun, Boston Herald, 9 Aug. 2026

Definition of detrimental

Adjective

The greatest risk from the storms will be from damaging winds and heavy downpours.

— Rachael Jay, CBS News, 20 Aug. 2026
Although both helped mitigate the effects of the gas, urine offered some degree of chemical protection because its ammonia partially neutralized the chlorine, reducing the gas’s damaging and potentially lethal effects on the lungs.

— Encyclopedia Britannica, Encyclopedia Britannica, 19 Aug. 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 20 Aug. 2026.

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Synonyms of nocuous

adjective

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