Kasir is a modern American name coined on the pattern of Nasir, "helper", Jasir and Yasir; it is sometimes linked to the Arabic Kathir, "abundant" or "plentiful", but it has no fixed traditional meaning. Its clipped two-syllable sound suits the current taste for names ending in -ir. Kasir had fewer than five births in 2000, rose from number 9161 in 2015 to a peak at number 2543 in 2024 and sits at number 2662 in 2025 with 49 boys.