ALL meanings of at one fell swoop
at one fell swoop
A a - verb without object at one fell swoop to sweep through the air, as a bird or a bat, especially down upon prey. 1
- verb without object at one fell swoop to come down upon something in a sudden, swift attack (often followed by down and on or upon): The army swooped down on the town. 1
- verb with object at one fell swoop to take, lift, scoop up, or remove with or as with one sweeping motion (often followed by up, away, or off): He swooped her up in his arms. 1
- noun at one fell swoop an act or instance of swooping; a sudden, swift descent. 1
- idioms at one fell swoop at / in one fell swoop, all at once or all together, as if by one blow: The quake flattened the houses at one fell swoop. 1