Greek word
ponērós
πονηρός
What it means
hurtful, i.e. evil, which refers rather to essential character, as well as from saprós, which indicates degeneracy from original virtue)
hurtful, i.e. evil (properly, in effect or influence, and thus differing from kakós (κακός), which refers rather to essential character, as well as from saprós (σαπρός), which indicates degeneracy from original virtue); figuratively, calamitous; also (passively) ill, i.e. diseased; but especially (morally) culpable, i.e. derelict, vicious, facinorous; neuter (singular) mischief, malice, or (plural) guilt; masculine (singular) the devil, or (plural) sinners
Where it comes from
from a derivative of pónos (πόνος)