single-handed

“This guy single-handedly opened up that prospect to a huge new population.”

Ye made headlines for removing windows, doors, electricity and plumbing in the house and the man whom he hired to work on it said he “single-handedly destroyed this architectural masterpiece.”

Comprehending its long-term ramifications for American politics, by contrast, is a much simpler matter: It demonstrated that presidential debates can single-handedly and massively alter the course of human history.

Then in the fifth, Ohtani almost single-handedly gave the Dodgers some insurance.

Repeatedly, he singled out cat ownership as a sure sign that one belonged to the "cabal" of non-mothers he believes are single-handedly destroying the nation.