α. Scottish pre-1700 effectosly, pre-1700 effectouslie, pre-1700 effectously, pre-1700 effectusle, pre-1700 effectuslie, pre-1700 effectusly.
β. late Middle English effectuoselye, late Middle English effectuosly, late Middle English effectuvsly, late Middle English–1500s 1800s effectuously, 1500s effectuousely, 1500s effectuouslie, 1500s effectuouslye; Scottish pre-1700 effectueusli, pre-1700 effectuisli, pre-1700 effectuislie, pre-1700 effectuisly, pre-1700 effectuoslie, pre-1700 effectuouslie, pre-1700 effectuously, pre-1700 effectuouslye, pre-1700 effectuuslie, pre-1700 effectuusly, pre-1700 effectwisly, pre-1700 effectwusle, pre-1700 effectwysly.
γ. 1500s effecteouslye; Scottish pre-1700 effecteouslie, pre-1700 effecteously, pre-1700 effecteusly, pre-1700 effectiouslie, pre-1700 effectiuslie.