Insubstantial meaning
Very small or negligible, as in importance, size, or amount.
An insubstantial volume of traffic.
adjective
Lacking or appearing to lack substance or reality.
adjective
Not substantial.
- Not real; imaginary.
- Not solid or firm; weak or flimsy.
adjective
Not firm or solid; weak or flimsy.
A shed made of insubstantial materials.
adjective
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Origin of insubstantial
- in- + substantial
From Wiktionary