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Word of the Day Tuesday, June 9, 2026

deleterious

/dɪˈlɛtɪərɪəs/ adjective · British & US
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What does deleterious mean?

adjective

Harmful or detrimental to the health or well-being of someone or something.

Example

"The deleterious effects of pollution on the environment are well-documented."

Definition generated by AI and curated by RJS Tech Solutions LLP.

Synonyms for deleterious

Antonyms of deleterious

Rhymes with deleterious

Etymologically related