ن د مn-d-m
(س) نَدِمَ يَنْدَمُ نَدَمًا وَنَدَامَةًnadima yandamu nadaman wa-nadāmatan: to regret, to be remorseful. (This verb is not used in the Quran.)
نَادِمٌnādim pl. نٰدِمُوْنَnādimūna (active participle, ism fāʿil): one who regrets. ﴿فَاَصْبَحَ مِنَ النّٰدِمِيْنَ﴾ (Al-Māʾidah 5:31); ﴿فَتُصْبِحُوْا عَلٰى مَا فَعَلْتُمْ نٰدِمِيْنَ﴾ (Al-Ḥujurāt 49:6)
نَدَامَةٌnadāmah (verbal noun, maṣdar, also a noun, ism dhāt): regret, remorse. ﴿وَاَسَرُّوا النَّدَامَةَ لَمَّا رَاَوُا الْعَذَابَ﴾ (Yūnus 10:54)