insubstantial

insubstantial
[ɪnsəbˈstænʃəl]
adjetivo
1endeble (structure, argument); poco sustancioso (meal); intrascendente, insustancial (book)

insubstantial [ˌɪnsəbˈstænʃəl] ?
adjective
(gen) insustancial; [+meal] poco sustancioso;

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hearty laughter, raucous laughter, guffaw