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Meaning of rad-lib

rad-lib

Pronunciation: (rad'lib'), [key]
— Informal. Informal.
—n.
  1. a liberal, esp. a liberal politician, considered to have radical or extremist tendencies.
—adj.
  1. being or of such a liberal; liberal tending toward radical: The congressman accused his opponent of holding rad-lib ideas.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.