Insubstantial and Supermundane

Insubstantial adjective - Being of a material lacking in sturdiness or substance.

Supermundane and insubstantial are semantically related In some cases you can use "Supermundane" instead an adjective "Insubstantial".

Insubstantial and supermundane are semantically related in not physical topic. Sometimes you can use "Insubstantial" instead an adjective "Supermundane".