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Nocuous

Adjective | /nocuous/

Advanced WordsHARD

Harmful or injurious.

Learning Progress

Synonyms

harmfulinjuriousdamaging

Antonyms

innocuousharmless

Examples

"The laboratory took precautions when handling the nocuous substance. Means: The laboratory used safeguards because the substance could cause harm."

"The report warned that the chemical could have nocuous effects on wildlife. Means: The report warned that the chemical could harm wildlife."

Mnemonic Trick

Nocuous is related to “innocuous,” which means harmless; nocuous means harmful.

Source: Advanced WordsAdded: 9/30/2026

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Active Learners62
Words Being Learned107
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