1) Baseless 2) Groundless 3) Idle 4) Not held up or borne 5) Single-handed 6) Unassisted 7) Unbacked 8) Uncorroborated 9) Unfounded 10) Unsubstantiated 11) Unwarranted 1) Baseless 2) Groundless 3) Strapless 4) Unassisted 5) Unbacked 6) Unbraced 7) Unconfirmed 8) Uncorroborated 9) Undocumented 10) Unfounded 11) Unsubstantiated 12) Unverified 
[adj] - not sustained or maintained by nonmaterial aid 2. [adj] - not held up or borne 3. [adj] - not supported by written evidence
adjective not supported by written evidence; `unsupported accusations`