harmகெடுkeṭu(keḍu)(6 tr)damage or spoil, as s.o.'s reputation, etc.; hurt, wound, as bodily functions, etc.; affect, as mental functions
Usage:
நீ அவனுடைய நன்னடத்தையைத் தாக்கினபொழுது அவனுடைய புகழைக் கெடுத்துவிட்டாய்nī avaṉuṭaiya naṉṉaṭattaiyait tākkiṉapoḻutu avaṉuṭaiya pukaḻaik keṭuttuviṭṭāy
nii avanooḍa nalla naḍatteye taakkunappa avanooḍa pohaḻe keḍuttuṭṭe
You harmed his reputation when you attacked his character.