unscrupulous Synonyms

scheming twisted unconscionable underhand underhanded unfair unjust unlawful unprincipled unreputable treacherous traitorous swindling seducible shady shameless sharp shifty slippery sly sneaky snide untruthful venal vicious machiavellian amoral dishonourable unethical one-eyed opportunistic unsportsmanlike unconscientious unscrupulously scoundrelly below the belt dodgy villainous wicked wily wrongful untrustworthy unprofessional duplicitous two-faced unapologetic unsporting roguish aggressive criminal