خَافَ — يَخَافُ — خَوْفًا — he feared; he fears; fear.
خَائِفٌ — one who fears, the active participle.
خِيفَ — يُخَافُ — was feared; is feared, passive constructions where meaningful.
مَخُوفٌ — feared, the passive participle.
خَفْ — fear; لَا تَخَفْ — do not fear.
Its original root is خ و ف. Rule 6 explains the active imperfect, Rule 7 the participial hamzah, and Rule 4 the kasrah in خِفْتُ.
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Short Paradigm 3: خَافَ
Hollow Verbs: Seven Iʿlāl Rules and Three Short Paradigms
خَافَ — يَخَافُ — خَوْفًا — he feared; he fears; fear.
خَائِفٌ — one who fears, the active participle.
خِيفَ — يُخَافُ — was feared; is feared, passive constructions where meaningful.
مَخُوفٌ — feared, the passive participle.
خَفْ — fear; لَا تَخَفْ — do not fear.
Its original root is خ و ف. Rule 6 explains the active imperfect, Rule 7 the participial hamzah, and Rule 4 the kasrah in خِفْتُ.