Unsubstantial and Without basis

Unsubstantial adjective - Not composed of matter.

Without basis and unsubstantial are semantically related In some cases you can use "Without basis" instead an adjective "Unsubstantial".

Nearby Word: unsubstantially

Unsubstantial and without basis are semantically related in not making sense topic. Sometimes you can use "Unsubstantial" instead an adjective phrase "Without basis".