nefarious
/ni-ˈfer-ē-əs/
adjective
flagrantly wicked or impious : evil
vicious villainous iniquitous nefarious corrupt degenerate mean highly reprehensible or offensive in character, nature, or conduct. vicious may directly oppose virtuous in implying moral depravity, or may connote malignancy, cruelty, or destructive violence. villainous applies to any evil, depraved, or vile conduct or characteristic.