غ ب نgh-b-n
(ض) غَبَنَ يَغْبِنُ غَبْنًاghabana yaghbinu ghabnan: to cheat in a bargain, to cause loss. (this verb is not used in the Quran).
Form VI (tafāʿul) تَغَابَنَ يَتَغَابَنُ تَغَابُنًاtaghābana yataghābanu taghābunan: for the loss of each party to become apparent to the other. "يَوْمُ التَّغَابُنِyawmu at-taghābun": a name of the Day of Resurrection — the exegetes say that on that day everyone's loss will be laid bare: for the people of Paradise, that they did not earn still more, and for the people of the Fire, that they lost everything. Only once in the Quran, and the surah takes its name from it: ﴿ذٰلِكَ يَوْمُ التَّغَابُنِ﴾ (At-Taghābun 64:9).