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

Synonyms & Similar Words

Relevance

Antonyms & Near Antonyms

Example Sentences

Recent Examples of Synonyms for nocuous

Adjective

California was among dozens of states that sued Meta in 2023, alleging in a lawsuit that the social media giant intentionally designed harmful and addictive features to hook children while misleading the public about the dangers.

— Sonja Sharp, Los Angeles Times, 26 Aug. 2026
The report said the company was strengthening its research infrastructure, increasing monitoring and improving safeguards designed to prevent harmful or unintended behavior.

— Reuters, NBC news, 26 Aug. 2026

Definition of harmful

Adjective

The desert’s location on the southern border has led to many migrants attempting to cross it by using dangerous backcountry routes, the experts said.

— Emma Tucker, CNN Money, 24 Aug. 2026
Rather, this is a dangerous, shape-shifting synthetic entity that ravaged their entire planet.

— Siddhant Adlakha, Vulture, 24 Aug. 2026

Definition of dangerous

Adjective

Then England attracted adverse attention for openly drinking in the Queensland resort of Noosa when 2-0 down in a one-sided Ashes series in Australia.

— Paul Newman, New York Times, 23 Aug. 2026
Women with high occupational heat exposure were roughly twice as likely to suffer a miscarriage or stillbirth as those working in cooler conditions, and faced elevated risks of adverse birth outcomes overall.

— Catarina Rolfsdotter-Jansson, Forbes.com, 22 Aug. 2026

Definition of adverse

Adjective

Missing, say, 30 games would likely not be as damaging as missing half a season, or a whole season.

— Evan Drellich, New York Times, 26 Aug. 2026
Strong El Niño events, such as the one revving up in the tropical Pacific, have rarely spared the Golden State from significant and damaging consequences.

— Andrew Freedman, CNN Money, 25 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.

Browse Nearby Words

nocturnal

nocuous

nod

See all Nearby Words

Podcast

Cite this Entry

Style

“Nocuous.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/nocuous. Accessed 29 Aug. 2026.

Copy Citation

Synonyms of nocuous

adjective

Example Sentences

Browse Nearby Words

Podcast

Cite this Entry

More from Merriam-Webster

Word of the Day

kith

Popular in Grammar & Usage

A Who’s Who Regarding ‘Who’s’ and ‘Whose’

'A' or 'an'? What about before 'h'? An Indefinite Article Guide

Why is '-ed' sometimes pronounced at the end of a word?

What's the difference between 'fascism' and 'socialism'?

Commonly Misspelled Words

Popular in Wordplay

Ye Olde Nincompoop: Old-Fashioned Words for 'Stupid'

14 Phobias You Probably Haven't Heard Of

Even More Words That Sound Like Insults But Aren't

The Words of the Week - Aug. 28

Why do we say 'break a leg'?

Popular

A Who’s Who Regarding ‘Who’s’ and ‘Whose’

Ye Olde Nincompoop: Old-Fashioned Words for 'Stupid'

14 Phobias You Probably Haven't Heard Of

Games & Quizzes