ع ف فʿ-f-f
(ض) عَفَّ يَعِفُّ عِفَّةًʿaffa yaʿiffu ʿiffatan (original form: عَفَفَ يَعْفِفُʿafafa yaʿfifu): to be safe from every objectionable word and deed, to be chaste. (this verb is not used in the Quran).
Form V (tafaʿʿul) تَعَفَّفَ يَتَعَفَّفُ تَعَفُّفًاtaʿaffafa yataʿaffafu taʿaffufan: to restrain oneself from objectionable things; to hold back (from asking). ﴿يَحْسَبُهُمُ الْجَاهِلُ اَغْنِيَآءَ مِنَ التَّعَفُّفِ﴾ (Al-Baqarah 2:273)
Form X (istifʿāl) اِسْتَعْفَفَ يَسْتَعْفِفُ اِسْتِعْفَافًاistaʿfafa yastaʿfifu istiʿfāfan: to keep away from objectionable things, to adopt chastity. ﴿وَمَنْ كَانَ غَنِيًّا فَلْيَسْتَعْفِفْ﴾ (An-Nisāʾ 4:6); ﴿وَلْيَسْتَعْفِفِ الَّذِيْنَ لَا يَجِدُوْنَ نِكَاحًا﴾ (An-Nūr 24:33)