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Meaning of crackpot

crack•pot

Pronunciation: (krak'pot"), [key]
— Informal. Informal.
—n.
  1. a person who is eccentric, unrealistic, or fanatical.
—adj.
  1. eccentric; impractical; fanatical: crackpot ideas.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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