/ pəˈmɪsɪv; NAmE pərˈm-/ adjective
allowing or showing a freedom of behaviour that many people do not approve of, especially in sexual matters :
permissive attitudes
permissive parents (= who allow their children a lot of freedom)
► per·mis·sive·ness noun [ U ]
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WORD ORIGIN
late 15th cent. (in the sense tolerated, allowed ): from Old French , or from medieval Latin permissivus , from permiss- allowed, from the verb permittere , from per- through + mittere send, let go.