(ن) عَفَا يَعْفُوْ عَفْوًاʿafā yaʿfū ʿafwan: to leave something alone; for pardoning a person it takes the preposition "عَنْʿan", i.e. to forgo punishment.
عَافٍʿāf pl. عَافُوْنَʿāfūna (active participle, ism fāʿil): one who pardons. ﴿عَفَا اللّٰهُ عَنْكَ﴾ (At-Tawbah 9:43); ﴿وَالْعَافِيْنَ عَنِ النَّاسِ﴾ (Āl ʿImrān 3:134)
عَفْوٌʿafw (also a noun, ism dhāt): pardon; that which is left over or can be spared, i.e. the surplus beyond one's need. ﴿خُذِ الْعَفْوَ وَاْمُرْ بِالْعُرْفِ﴾ (Al-Aʿrāf 7:199); ﴿وَيَسْـَٔلُوْنَكَ مَاذَا يُنْفِقُوْنَ قُلِ الْعَفْوَ﴾ (Al-Baqarah 2:219)
عَفُوٌّʿafuww (intensive form, ṣīghat al-mubālaghah, on the pattern of فَعُوْلٌfaʿūl): one who pardons without limit. ﴿اِنَّ اللّٰهَ كَانَ عَفُوًّا غَفُوْرًا﴾ (An-Nisāʾ 4:43)
Form III (mufāʿalah) عَافٰى يُعَافِيْ مُعَافَاةًʿāfā yuʿāfī muʿāfātan: to grant someone well-being; to protect from illness or affliction; to exempt from a responsibility (this verb is not used in the Quran).