nefariousadjective
uk/nəˈfeə.ri.əs/us/nəˈfer.i.əs/formal(especially of activities) morally bad:
The company's CEO seems to have been involved in some nefarious practices/activities.
Thesaurus: synonyms and related words
Morally wrong and evil
- abhorrent
- amoral
- anomie
- arch-villain
- be rotten to the core idiom
- canker
- darkly
- evil
- evildoer
- go to the bad idiom
- godless
- hanky-panky
- heinous
- immoral
- seamy
- seedy
- shocking
- shockingly
- sinful
- wickedness
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nefariously
adverb uk/nəˈfeə.ri.əs.li/us/nəˈfer.i.əs.li/
nefariousness
noun [ U ] uk/nəˈfeə.ri.əs.nəs/us/nəˈfer.i.əs.nəs/