“+ adjective
Etymology: probably from French insubstantiel, from Late Latin insubstantialis, from in- in- (I) + substantialis substantial
: not substantial: as
a. : lacking substance or reality : imaginary , apparitional
an insubstantial mirage floating near the horizon
b. : lacking firmness or solidity of structure : flimsy , frail
delicate insubstantial wrists and ankles
• in·substantiality “+ noun