WordNet: unsupported

not sustained or maintained by nonmaterial aid; "unsupported accusations"

• similar to baseless, groundless, idle, unfounded, unwarranted, wild

• similar to single-handed, unassisted, unbacked

• similar to uncorroborated, unsubstantiated

unsupported

• (englanti) supported (antonym)
• (suomi) perusteeton (synonyymi)