Meaning : Lacking material form or substance. Unreal.
Example :
As insubstantial as a dream.
An insubstantial mirage on the horizon.
Synonyms : unreal, unsubstantial
Having substance or capable of being treated as fact. Not imaginary.
The substantial world.Meaning : Lacking in nutritive value.
Example :
An insubstantial and unsatisfying meal.
Meaning : Lacking solidity or strength.
Example :
A flimsy table.
Flimsy construction.
Vinyl siding has become the standard-bearer for cheap, insubstantial construction.
Synonyms : flimsy
Insubstantial meaning in Bengali (Bangla).