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

Several dietary supplements were recalled in July because of possible undeclared prescription drugs, harmful bacteria or allergens.

— Angela Rodriguez, Sacbee.com, 4 Aug. 2026
The air district is warning residents that wildfire smoke contains fine particulate matter and other harmful pollutants, adding that exposure is unhealthy, even for short periods of time.

— Tim Fang, CBS News, 4 Aug. 2026

Definition of harmful

Adjective

Despite Penta's aggressive offense and dangerous maneuvers, Gable persevered, ultimately making Penta submit with a decisive ankle lock, securing a triumphant and emotional victory.

— Alfred Konuwa, Forbes.com, 3 Aug. 2026
Three wildfires are burning in Spokane County, Washington, and thousands of families have been ordered to flee their homes overnight, as state officials warn of an incredibly dangerous situation and brace for what daylight may reveal.

— Martin Goillandeau, CNN Money, 2 Aug. 2026

Definition of dangerous

Adjective

Those children were held in custody for an average of 194 days before being released to sponsors, which lawyers who represent the children say is unusually long and has been detrimental to the health and safety of the children.

— Chiara Eisner, NPR, 1 Aug. 2026
Much has been made of the detrimental effects of the rise in the minimum wage and an increase in employers’ national insurance costs (effectively a tax on employment) introduced by former Chancellor of the Exchequer Rachel Reeves.

— Roger Trapp, Forbes.com, 31 July 2026

Definition of detrimental

Adjective

The adverse weather in Auckland limited the group’s freedom to explore, but there were no such constraints in Sydney’s winter sun.

— Elias Burke, New York Times, 2 Aug. 2026
Islamabad — Rescuers searching for 10 climbers missing after an avalanche on Pakistan's Broad Peak located four bodies Friday and were continuing to search for the others despite adverse weather that hampered helicopter flights, officials said.

— CBS News, CBS News, 31 July 2026

Definition of adverse

Adjective

Several rounds of showers and thunderstorms are expected Wednesday into Thursday morning, with a few storms capable of damaging winds and heavy downpours, the National Weather Service said.

— Kansas City Star, Kansas City Star, 5 Aug. 2026
A couple of those storms could become severe, with damaging winds and torrential downpours.

— Rachael Jay, CBS News, 5 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 8 Aug. 2026.

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Synonyms of nocuous

adjective

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