insubstantial   (Sound)

The insubstantial has 2 Senses.

• insubstantial, unreal, unsubstantial
• lacking material form or substance; unreal; "as insubstantial as a dream"; "an insubstantial mirage on the horizon"
• 材料形態または物質が不足するさま

• jejune, insubstantial
• lacking in nutritive value; "the jejune diets of the very poor"
• 栄養価が不足するさま