lais·sez faire also lais·ser faire 
(lĕs′ā fâr, lā′zā)
(lĕs′ā fâr, lā′zā)n.
1. An economic doctrine that opposes governmental regulation of or interference in commerce beyond the minimum necessary for a free-enterprise system to operate according to its own economic laws.
2. Noninterference in the affairs of others.
[French : laissez, second person pl. imperative of laisser, to let, allow + faire, to do.]
lais′sez-faire adj.