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most vacuous

ADJECTIVE

empty; unintelligent

Synonyms

WEAK

airheaded birdbrained blank drained dull dumb emptied foolish half-baked inane lamebrained minus shallow silly stupid superficial uncomprehending unreasoning vacant void

Antonyms

WEAK

aware filled full intelligent

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.