ک ف اk-f-ʾ
(ک) كَفُؤَ يَكْفُؤُ كَفَاءَةًkafuʾa yakfuʾu kafāʾatan: to be equal and a match.
كُفْوkufw / كُفُؤkufuʾ pl. أَكْفَاءakfāʾ: a peer, an equal. The lexicographers say that كُفُؤkufuʾ is one who proves equal in confrontation. Only once in the Quran, at the close of Sūrat al-Ikhlāṣ: ﴿وَلَمْ يَكُنْ لَّهُۥ كُفُوًا أَحَدٌ﴾ (Al-Ikhlāṣ 112:4).
Form III (mufāʿalah) كَافَأَ يُكَافِئُ مُكَافَأَةًkāfaʾa yukāfiʾu mukāfaʾatan: to repay someone for what he has done; to be equal to someone (this verb is not used in the Quran).