permissive
adj.allowing or encouraging people to do what they want, even if it is not always safe or traditional. In biology, it describes a gene that lets another gene work.
adj.allowing or encouraging freedom of action or expression; in a biological context, facilitating the expression of another gene. Often used to describe social attitudes or genetic regulation.
“The school has a very permissive attitude toward student dress.”
“The new software update includes a permissive license that allows users to modify the code for any purpose.”
“While the regulatory environment was initially restrictive, the recent shift toward a more permissive framework has spurred a wave of innovation across the sector.”
From French permissif.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.