ن ک فn-k-f
(ن) نَكَفَ يَنْكُفُ نَكْفًاnakafa yankufu nakfan: to turn up one's nose, to be disgusted. (This verb is not used in the Quran.)
Form X (istifʿāl) اِسْتَنْكَفَ يَسْتَنْكِفُ اِسْتِنْكَافًاistankafa yastankifu istinkāfan: to consider something a disgrace for oneself, to disdain to do it. ﴿لَنْ يَّسْتَنْكِفَ الْمَسِيْحُ اَنْ يَّكُوْنَ عَبْدًا لِّلّٰهِ﴾ (An-Nisāʾ 4:172); ﴿وَاَمَّا الَّذِيْنَ اسْتَنْكَفُوْا وَاسْتَكْبَرُوْا﴾ (An-Nisāʾ 4:173)