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laisser-aller

or lais·sez-al·ler

[le-sey-a-ley]
noun French.
  1. unchecked freedom or ease; unrestraint; looseness.
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Origin of laisser-aller

literally, to allow to go
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for laissez aller

laissez aller

laisser aller

noun
  1. lack of constraint; freedom
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Word Origin

literally: let go
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012