— unsubstantiality , n. — unsubstantially , adv.
/un'seuhb stan"sheuhl/ , adj.
1. not substantial; having no foundation in fact; fanciful; insubstantial: an unsubstantial argument; unsubstantial hopes.
2. without material substance: an unsubstantial ghost.
3. lacking material substance; materially paltry: an unsubstantial dinner of bread and cheese.
4. lacking strength or solidity; flimsy: an unsubstantial wall of cardboard.
[ 1425-75; late ME; see UN- 1 , SUBSTANTIAL ]