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free rein

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noun
  1. unhampered freedom of movement, choice, or action: Students have free rein to choose their own class schedules.
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Origin of free rein

First recorded in 1950–55
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for free rein

play, unrestraint

Idioms and Phrases with free rein

free rein

see free hand.

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The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.