غ م رgh-m-r
(ن) غَمَرَ يَغْمُرُ غَمْرًاghamara yaghmuru ghamran: (of water) to be so abundant that it covers everything; hence (1) to be excessive, to be severe (2) (of the mind) to be covered over by something, to be heedless and stupefied. (This verb is not used in the Quran.)
غَمْرَةٌghamrah pl. غَمَرٰتٌghamarāt (noun (ism dhāt)): (1) excess, severity (2) heedlessness, stupor. ﴿فَذَرْهُمْ فِيْ غَمْرَتِهِمْ حَتّٰى حِيْنٍ﴾ (Al-Muʾminūn 23:54); ﴿اِذِ الظّٰلِمُوْنَ فِيْ غَمَرٰتِ الْمَوْتِ﴾ (Al-Anʿām 6:93)