a. Obs. rare. Also 1 ʓelástful. [f. OE. ʓe-lást duty + -FUL.] Helpful, serviceable.
c. 1000. Laws of Æthelstan, VI. c. 4 (Schmid), 160. Ðæt ælc man wære oðrum ʓelastfull.
c. 1200. Trin. Coll. Hom., 183. Þu ware me lastful on alle þo þe ich wolde we ware onmode godes wille to done.
