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Word of the Day Wednesday, June 10, 2026

nefariousness

/ˌnɛfəˈriəs.nɪs/ noun · British & US
Valid in UK
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What does nefariousness mean?

noun

The state or quality of being wicked or unscrupulous; a wicked or unscrupulous act or deed.

Example

"The nefariousness of the company's actions led to a public outcry."

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

Synonyms for nefariousness

Antonyms of nefariousness

Rhymes with nefariousness

Etymologically related