All vacuous synonyms

adj vacuous

• blank — Something that is blank has nothing on it.
• drained — to withdraw or draw off (a liquid) gradually; remove slowly or by degrees, as by filtration: to drain oil from a crankcase.
• dull — not sharp; blunt: a dull knife.
• dumb — lacking intelligence or good judgment; stupid; dull-witted.
• foolish — resulting from or showing a lack of sense; ill-considered; unwise: a foolish action, a foolish speech.
• half-baked — insufficiently cooked.
• inane — lacking sense, significance, or ideas; silly: inane questions.
• minus — less by the subtraction of; decreased by: Ten minus six is four.
• shallow — of little depth; not deep: shallow water.
• silly — weak-minded or lacking good sense; stupid or foolish: a silly writer.
• stupid — lacking ordinary quickness and keenness of mind; dull.
• superficial — being at, on, or near the surface: a superficial wound.
• vacant — having no contents; empty; void: a vacant niche.
• void — Law. having no legal force or effect; not legally binding or enforceable.
• uncomprehending — to understand the nature or meaning of; grasp with the mind; perceive: He did not comprehend the significance of the ambassador's remark.
• airheaded — Slang. a scatterbrained, stupid, or simple-minded person; dolt.
• birdbrained — a stupid, foolish, or scatterbrained person.
• lamebrained — a dunce; booby; fool.
• unreasoning — not reasoning or exercising reason; reasonless; thoughtless; irrational: an unreasoning fanatic.