(ن، س) نَفَقَ يَنْفُقُ وَنَفِقَ يَنْفَقُ نَفَاقًا وَنَفَقًاnafaqa yanfuqu wa-nafiqa yanfaqu nafāqan wa-nafaqan: to be spent, to run out; (of a jerboa) to go into a burrow with two openings. (This verb is not used in the Quran.)
نَفَقَةٌnafaqah pl. نَفَقَاتٌnafaqāt (noun, ism dhāt): expenditure, that which is spent. ﴿وَمَآ اَنْفَقْتُمْ مِّنْ نَّفَقَةٍ اَوْ نَذَرْتُمْ مِّنْ نَّذْرٍ﴾ (Al-Baqarah 2:270)
نَفَقٌnafaq (noun, ism dhāt): a tunnel (with two openings). Only once in the Quran: ﴿فَاِنِ اسْتَطَعْتَ اَنْ تَبْتَغِيَ نَفَقًا فِي الْاَرْضِ﴾ (Al-Anʿām 6:35)
Form IV (ifʿāl) اَنْفَقَ يُنْفِقُ اِنْفَاقًاanfaqa yunfiqu infāqan: to spend; اَنْفِقْanfiq pl. اَنْفِقُوْاanfiqūā (imperative, amr): spend!; مُنْفِقٌmunfiq (active participle, ism fāʿil): one who spends. ﴿وَمِمَّا رَزَقْنٰهُمْ يُنْفِقُوْنَ﴾ (Al-Baqarah 2:3); ﴿وَالْمُنْفِقِيْنَ وَالْمُسْتَغْفِرِيْنَ بِالْاَسْحَارِ﴾ (Āl ʿImrān 3:17)
Form III (mufāʿalah) نَافَقَ يُنَافِقُ نِفَاقًا وَمُنَافَقَةًnāfaqa yunāfiqu nifāqan wa-munāfaqatan: to be two-faced (one thing outwardly, another inwardly), to act the hypocrite; مُنَافِقٌmunāfiq (active participle, ism fāʿil): a hypocrite. ﴿وَلِيَعْلَمَ الَّذِيْنَ نَافَقُوْا﴾ (Āl ʿImrān 3:167); ﴿مَرَدُوْا عَلَي النِّفَاقِ﴾ (At-Tawbah 9:101); ﴿اِنَّ الْمُنٰفِقِيْنَ فِي الدَّرْكِ الْاَسْفَلِ مِنَ النَّارِ﴾ (An-Nisāʾ 4:145)