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

These spurious claims about childhood vaccines will only increase vaccine hesitation with harmful results.

— Sun Sentinel Editorial Board, Sun Sentinel, 13 Aug. 2026
One reason for this is that peppermint oil has known antimicrobial properties and can destroy harmful microorganisms.

— BestReviews, Chicago Tribune, 13 Aug. 2026

Definition of harmful

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

And the very review of the arch that identified its adverse effects is in the crosshairs of the administration.

— Edward Keegan, Chicago Tribune, 9 Aug. 2026
The Coastal Commission is widely expected to take any adverse ruling to court, potentially arguing that the federal government can’t deny a state its fundamental rights — in this case, a say over projects that affect its economy — over politics.

— Andre Mouchard, Oc Register, 9 Aug. 2026

Definition of adverse

Adjective

More damaging, employees gradually learn that raising concerns means navigating the leader's emotional reaction before addressing the actual issue.

— Rodger Dean Duncan, Forbes.com, 13 Aug. 2026
The main threats are expected to be damaging winds, hail and possible tornadoes.

— Michelle Simmons, ABC News, 12 Aug. 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 16 Aug. 2026.

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Synonyms of nocuous

adjective

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