Swift

(male) Probably from the name of the bird, so called because of its rapid, darting flight (Old English swift, referring to a sweeping motion). In part it may represent a transferred use of the surname, in origin usually a nickname for a fast runner. As an Irish surname it represents an Anglicized form of Gaelic Ó Fuada ‘descendant of Fuada’, a personal name derived from fuad ‘haste’.