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

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

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