at a blow


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at a (single) blow

All at once, with a single decisive or powerful action. When the economy crashed, thousands of people lost their jobs, their homes, and their pensions at a single blow. As the two leaders ratified the treaty, 10 years of civil war ended at a blow.
See also: blow

at a (single) ˈblow

,

at one ˈblow

with a single action or effort; all at once: By stopping all payments to her sons, she made all three of them poor at one blow.
See also: blow