a. Obs. In 6 Sc. effecf-. [f. EFFECT + -FULL.] Effectual.
1555. Sc. Acts Mary, xviii. Our souerane Lady in her parliament … maid actis … quhilkis as yit hes tane na dew and effecfull execucion.
1669. W. Simpson, Hydrol. Chym., 78. The effectful cause of direful diseases.
