aboveboard Antonyms

unscrupulously swindling subtle shifty sharp shady shadily roguish rascally perfidious mendacious lying treacherous tricky truthless amoral malfeasant illicitly unlawfully dodgy back room untruthful unscrupulous unprincipled underhandedly underhand knavish janus-faced designing deceptive deceiving deceitful cunning crooked criminally crafty corruptly corrupt cheating devious dirty dishonest illegitimately illegally illegal ignobly hollow-hearted fraudulently fraudulent false-hearted