Definition of "vacuous" []

• Devoid of matter; empty. (adjective)
• Lacking intelligence; stupid. (adjective)
• Devoid of substance or meaning; inane: a vacuous comment. (adjective)
• Devoid of expression; vacant: "The narrow, swinelike eyes were open, no more vacuous in death than they had been in life” ( Nicholas Proffitt). (adjective)
• Lacking serious purpose or occupation; idle. See Synonyms at empty. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Furthermore, labeling your argument vacuous is a condemnation of your argument, not of you."
• "Scientifically vacuous is not the same as invalid."
• "MikeGene: Scientifically vacuous is not the same as invalid."