Definition of "single-handedly"

Charlie Chaplin, the poignant little tramp with the cane and comic walk who almost single — handedly elevated the novelty entertainment medium of motion pictures into art, died peacefully yesterday at his home in Switzerland […]

1977 December 26, “Charlie Chaplin Dead at 88; Made the Film an Art Form”, in The New York Times‎

“Despite the surge in prices weighing on their purchasing power, the U.S. consumer now appears to be single-handedly keeping the global economy afloat,” Paul Ashworth, an economist at Capital Economics, wrote in a note.

2022 May 17, Coral Murphy Marcos, “Retail sales rise for the fourth straight month as prices keep climbing.”, in The New York Times‎