From the Semitic root ع-ر-ف (ʿ-r-f), conveying knowledge through recognition and familiarity. The same root gives Arabic معرفة (maʿrifa, "knowledge/gnosis") and عِرْفَان (ʿirfān, "mystical knowledge" in Sufi tradition), as well as cognates in Hebrew (הִכִּיר, hikkir) and Aramaic. The root's core sense is knowing something by having encountered or experienced it — experiential knowing — as distinct from عَلِمَ (ʿalima), which leans toward knowing a fact abstractly.

Arabic distinguishes two main verbs for "to know": عَرَفَ (ʿarafa) refers to knowing through recognition and familiarity (people, places, things you've experienced), while عَلِمَ (ʿalima) refers to knowing a fact or piece of information. English speakers often mix these up — think of عَرَفَ as closer to French *connaître* and عَلِمَ as closer to *savoir*. In Islamic theology, مَعْرِفَة (maʿrifa, derived from this root) is a key term for spiritual, direct knowledge of God — a concept central to Sufi thought.