adjective
- lacking physical substance or solidity; flimsy or weak
- lacking importance, significance, or worth; trivial
- lacking adequate evidence or basis; groundless
Examples
- The old shed was too insubstantial to withstand the storm.
- Her argument was insubstantial and failed to convince anyone.
- The witness provided only insubstantial evidence for his claims.
- The fabric was so insubstantial that it tore easily.
- Critics dismissed the proposal as insubstantial and poorly researched.
- The ghost appeared as an insubstantial figure in the moonlight.
- His concerns about the project seemed insubstantial to the committee.