Word Study
unethical
OXFORD DICTIONARY
unethical, adj. not ethical, esp. unscrupulous in business or professional conduct.
Derivative
unethically adv.
THESAURUS
unethical
amoral, conscienceless, corrupt, corrupted, criminal, crooked, dark, devious, dishonest, dishonorable, doubtful, dubious, evasive, felonious, fishy, fraudulent, ill-got, ill-gotten, immoral, indirect, insidious, mercenary, not kosher, questionable, rotten, shady, shameless, shifty, sinister, slippery, suspicious, tricky, unconscienced, unconscientious, unconscionable, underhand, underhanded, unprincipled, unsavory, unscrupulous, unstraightforward, venal, without remorse, without shameFor further exploring for "unethical" in Webster Dictionary Online