insubstantial

adjectives

lacking material form or substance; unreal
"as insubstantial as a dream"; "an insubstantial mirage on the horizon"
insubstantial, unreal, unsubstantial
is derived from
insubstantiality
is derived from
insubstantiality
antonym
substantial
lacking in nutritive value
"the jejune diets of the very poor"
insubstantial, jejune