Tafsir (Arabic: تفسير‎, romanized: Tafsīr, lit. 'interpretation' [taf. ˈsiːr]) is the Arabic word for exegesis, usually of the Quran. An author of a tafsir is a mufassir (Arabic: مُفسّر‎; plural: Arabic: مفسّرون‎, romanized: mufassirūn).