at a/one stroke

at one stroke

All at once, with a single decisive or powerful action. When the economy crashed, thousands lost their jobs, their homes, and their pensions at one stroke.
See also: one, stroke
Farlex Dictionary of Idioms.

at one stroke

Also, at one blow; at a stroke or blow ; in one stroke or blow . At the same time, with one forceful or quick action. For example, I managed to please both buyer and seller at one stroke. The first term is the older version, so used by Chaucer; at one blow was used by Shakespeare.
See also: one, stroke
The American Heritage® Dictionary of Idioms by Christine Ammer.

at a/one (single) ˈstroke

(something happens) as a result of one sudden action or event: All my problems were solved at a stroke when an aunt left me some money.
See also: one, stroke
Farlex Partner Idioms Dictionary
See also:
  • at one stroke
  • at/in one fell swoop
  • in one fell swoop
  • one fell swoop, in
  • swoop
  • at one fell swoop
  • at a (single) blow
  • at a (single) stroke
  • at a blow
  • in one blow