n.
Pronunciation: ' swift
Function: adjective
Etymology: Middle English, from Old English; akin to Old English sw ī fan to revolve ― more at SWIVEL
Date: before 12th century
1 : moving or capable of moving with great speed <a swift runner>
2 : occurring suddenly or within a very short time <a swift transition>
3 : quick to respond : READY
synonyms see FAST