Synonyms of single handed

Adjective

1. single-handed, unassisted, unbacked, unsupported (vs. supported)

usage: unsupported by other people

2. single-handed, independent (vs. dependent)

usage: without help from others; "a single-handed accomplishment"

Adverb

1. single-handed, single-handedly

usage: without assistance; "I built this house single-handedly"