Etymology

laissez faire

lais·sez faire

Today it means: A policy of governmental non-interference in economic affairs. Full definition →

French laissez faire
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The story

  1. French · borrowed fromlaissez faire“leave it be”
  2. English todaylaissez faire

Borrowed from French laissez faire (“leave it be”, literally “let do”).

Etymology from Wiktionary, CC BY-SA 4.0.