adj. 25B6; adjective IMMORAL, amoral, unprincipled, unscrupulous, dishonourable, dishonest, wrong, deceitful, unconscionable, fraudulent, underhand, wicked, evil, corrupt; unprofessional, improper.
UNETHICAL
Meaning of UNETHICAL in English
Concise Oxford thesaurus English vocabulary. Краткий оксфордский словарь английского языка тезаурус. 2012