From Longman Dictionary of Contemporary Englishat a/one strokeat a/one strokewith a single sudden action At one stroke, the country lost two outstanding leaders. → stroke
Examples from the Corpus
at a/one stroke• Gardening in tomorrow's world Future pest control at a stroke?• People pretty much looked at a stroke as a permanent condition: Once you had it, it was there.• His reputation would be lost at a stroke.• No one could therefore call for the closure of incineration plants at a stroke, because noxious chemicals have to go somewhere.• Brian saw a chance of solving all his problems at one stroke.• But as the 1980s began it seemed as if all the uncertainty had been resolved at a stroke.• The lek paradox is thus solved at a stroke.• Then, at a stroke, something happened that gave him a powerful sense of purpose.• Routes may be closed, reducing accessibility, or subsidies may be removed, increasing fares for users at a stroke. 