single-handedly

not-comparable

Alone; without assistance; by oneself.

Japanese Meaning

一人で / 単独で / 自力で / 助けを借りずに

She single-handedly organized the entire festival after the committee canceled their plans.

委員会が計画を中止した後、彼女は一人で祭り全体を企画した。

Sense（1）

Alone; without assistance; by oneself.

She single-handedly organized the whole event, and even set up all the chairs herself.