Taw, tav, or taf is the twenty-second and last letter of the Semitic abjads, including Phoenician Tāw , Hebrew Tav , Aramaic Taw , Syriac Taw �, and Arabic � Tāʼ (22nd in abjadi order, 3rd in modern order). In Arabic, it is also gives rise to the derived letter Ṯāʼ. Its original sound value is .