1.
If a statement or theory is ~, there is no evidence which proves that it is true or correct.
It was a theory ~ by evidence...
The letters contained ~ allegations.
ADJ
2.
An ~ person does not have anyone to provide them with money and the things they need.
Unsupported mothers are one of the fastest-growing groups of welfare claimants.
ADJ: usu ADJ n
3.
An ~ building or person is not being physically supported or held up by anything.
...the vast ~ wall of the Ajuda Palace in Lisbon.
...the child’s first ~ step.
ADJ: usu ADJ n