Insubstantial

[ɪnsəb'stænʃ(ə)l] or [,ɪnsəb'stænʃl]

(adj.) lacking material form or substance; unreal; 'as insubstantial as a dream'; 'an insubstantial mirage on the horizon' .

(adj.) lacking in nutritive value; 'the jejune diets of the very poor' .

Inputed by Glenda--From WordNet

(a.) Unsubstantial; not real or strong.

Checked by Jo

adj. (Shak.) not substantial: not real.—n. Insubstantial′ity.

Inputed by Billy

What an insubstantial, happy, foolish time it was! Charles Dickens. David Copperfield.
What an insubstantial, happy, foolish time! Charles Dickens. David Copperfield.

Inputed by Billy