feminine
the having an inevitable outcome; a state of certainty, an assured or determined state; a rule
Niyāmatā (feminine) [abstract to niyāma, influenced in meaning by niyama] state of being settled, certainty, reliance, surety, being fixed in (—°) S II 25 (dhamma° + dhammaṭṭhitatā); A I 286 (the same), Ja I 113 (saddhammassa n. assurance of ...); Kv 586 (accanta° final assurance).
(fem, fem, abstr, from niyāma) certainty; sureness; invariability; orderliness certainty, fixed method, regular order [lit.] controlling down state Construction: ni + √yam > yām + *a + tā niyāma + tā