un·scru·pu·lous 
/ˌʌnˈskru:pjələs/ adjective
/ˌʌnˈskru:pjələs/ adjective [more unscrupulous; most unscrupulous] : not honest or fair : doing things that are wrong, dishonest, or illegal
▪ an unscrupulous businessman
▪ an unscrupulous businessman
— un·scru·pu·lous·ly adverb
— un·scru·pu·lous·ness noun [noncount]
