shallow

empty flat hollow trivial

shelf shoal slight surface trifling

cursory depthless inconsiderable sand bar superficial unsound

full raised

important significant

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empty foolish frothy hollow trivial

flimsy idle lightweight petty piddling simple slight surface trifling

cursory empty-headed farcical featherbrained flighty frivolous half-baked inane meaningless paltry puerile sketchy skin-deep superficial uncritical unthinking vain wishy-washy

full

big consequential important major significant thick useful worthwhile

aware considered deep intelligent thoughtful