خ و فkh-w-f
(س) خَافَ يَخَافُ خَوْفًا وَخِيْفَةًkhāfa yakhāfu khawfan wa-khīfatan: to apprehend some coming danger, to fear. ﴿وَلِمَنْ خَافَ مَقَامَ رَبِّهِۦ جَنَّتٰنِ﴾ (Ar-Raḥmān 55:46)
خَوْفٌkhawf: fear, apprehension. ﴿فَلَا خَوْفٌ عَلَيْهِمْ وَلَا هُمْ يَحْزَنُوْنَ﴾ (Al-Baqarah 2:38)
خِيْفَةٌkhīfah: fear hidden in the heart. ﴿وَاذْكُرْ رَّبَّكَ فِيْ نَفْسِكَ تَضَرُّعًا وَّخِيْفَةً﴾ (Al-Aʿrāf 7:205)
Form II (tafʿīl) خَوَّفَ يُخَوِّفُ تَخْوِيْفًاkhawwafa yukhawwifu takhwīfan: to instil fear, to frighten. ﴿اِنَّمَا ذٰلِكُمُ الشَّيْطٰنُ يُخَوِّفُ اَوْلِيَآءَهُۥ﴾ (Āl ʿImrān 3:175)