underhanded Synonyms

underhand underarm sneaky tricky unsporting underhandedly undermanned unfair unprincipled treacherous surreptitious stealthy snide sneaking sly slippery slinking skulking unreputable unscrupulous venal unconscientious undercover unsportsmanlike understaffed shorthanded unethical machiavellian below the belt under-the-table behind-the-scenes duplicitous offstage backstage back room untrustworthy wily shifty shady dishonest dirty devious deceptive deceitful cunning crooked crafty covinous covert corrupt