πονηρός

Etymology: From Ancient Greek πονηρός (ponērós), derived from πόνος (pónos) meaning 'labor, toil, hardship'. Originally, it described someone who was oppressed by toil, but evolved to mean 'bad, evil, worthless' and later 'cunning, crafty'. The semantic shift reflects how hardship was associated with developing cunning or craftiness as a survival mechanism. The root πόνος is also found in words like 'ponos' (pain) and distantly related to English 'pain' through Latin 'poena'.