unsubstantial [
,ʌnsәb'stænʃәl]
a. 无实体的, 不坚固的, 浅薄的
unsubstantial[ adj ]
lacking material form or substance; unreal
<adj.all>
as insubstantial as a dreaman insubstantial mirage on the horizon
Unsubstantial \Un`sub*stan"tial\, a.
Lacking in matter or substance; visionary; chimerical.