Scearp-numol

According to the Old English Dictionary:

scearp-numol

adj. Efficacious:--Ðeós wyrt ys swýðe scearpnumul (-el, MS. B.) níwe wunda and wíde tó gehǽlenne, swá ðæt ða wunda hrædlíce tógædere gáþ, Lchdm. i. 134, 10. Ðeós wyrt is swíðe scearpnumul wið ðæt áttor, 152, 3. Swá se lǽcedóm yldra byþ, swá hé scearpnumulra and hálwendra byþ, 242, 5. scearp-numol