1) Biology terminology 2) Disposition 3) Temperament 4) Tolerance 1) Lenience 2) Overtolerance 3) Toleration 
[biology] In biology, permissiveness is a biochemical phenomenon in which the presence of one hormone is required in order for another hormone to exert its full effects on a target cell. ==Examples== Thyroid hormone increases the number of receptors available for epinephrine at the latter`s target cell, thereby increasing epinephrine`s effe...
The attitude that grants freedom of expression and activity to another individual, but not necessarily with sanction or approval. ... (12 Dec 1998) ... 
[n] - a disposition to allow freedom of choice and behavior
permissiveness 1. A disposition to allow freedom of choice and behavior. 2. A tendency or inclination to grant permission; tolerant or lenient.
noun a disposition to allow freedom of choice and behavior