I. ˈswüp verb
Etymology: alteration of Middle English swopen to sweep, from Old English swāpan — more at sweep
Date: 1566
intransitive verb
: to move with a sweep
transitive verb
: to gain or carry off in or as if in a swoop — usually used with up
• swoop·er noun
II. noun
Date: 1605
1. : an act or instance of swooping
2. : a single concentrated and quickly effective effort
was done in one swoop
— often used with fell
solved everything at one fell swoop