nefarious
Pronunciation:
/nɛˈfɛəɹi.əs//nɪˈfɛːɹɪ.əs/adjective
Definitions
Sinful, villainous, criminal, or wicked, especially when noteworthy or notorious for such characteristics.
Example: Aliens have a nefarious connotation in many science fiction books.
Synonyms:evilgood-for-nothinginiquitoussinisterunderhandedvile