Antonyms of adj unbacked

1 sense of unbacked

Sense 1
single-handed, unassisted, unbacked -- (unsupported by other people)

INDIRECT (VIA unsupported) -> supported -- (sustained or maintained by aid (as distinct from physical support); "a club entirely supported by membership dues"; "well-supported allegations")

Similarity of adj unbacked

1 sense of unbacked

Sense 1
single-handed, unassisted, unbacked -- (unsupported by other people)
       => unsupported (vs. supported) -- (not sustained or maintained by nonmaterial aid; "unsupported accusations")