nefarious

[ni-fair-ee-uhs] / nɪˈfɛər i əs /

ADJECTIVE

bad, sinful

Synonyms

STRONGEST

heinous horrible odious outrageous shameful vicious vile

WEAK

abominable atrocious base corrupt criminal degenerate depraved detestable dreadful evil execrable flagitious flagrant foul glaring gross infamous infernal iniquitous miscreant monstrous opprobrious perverse putrid rank rotten treacherous villainous wicked

Antonyms

STRONGEST

delightful gentle good kind magnificent nice pleasant pleasing wonderful

WEAK

honorable respectable virtuous worthy

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

A nefarious hacker could have easily installed a virus on to my machine without me having to do anything.

From BBC

That specifically relates to Rob, who is keeping a lot of secrets that may or may not be nefarious.

From Los Angeles Times

Siegal told the Journal that she was unaware of Epstein’s nefarious behavior.

From The Wall Street Journal

Sometimes, one sibling feels entitled to more and will use nefarious means to get it.

From MarketWatch

While questioning former employees of Price and Richardson, Higgins sought to paint a more nefarious picture.

From Los Angeles Times