single-handedly
/ˌsɪŋɡ(ə)lˈhandɪdli
/adverb
Without help from anyone else: Michael single-handedly transformed the team the first woman to sail single-handedly around the world...
- Dick Tracy is the ultimate good-guy cop of the 1940s trying single-handedly to bring down the mob.
- He gave an unforgettable performance, single-handedly rescuing the movie.
- His films have single-handedly defined the zombie genre.