Forþ-snoter

According to the Old English Dictionary:

-snotter;

forþ-snoter

adj. [snoter wise] Very wise; săpientissimus :-- Elene héht gefetian on fultum forþsnoterne Elene bade to fetch to her aid the very wise [man], Elen. Kmbl. 2104; El. 1053. Forþsnotterne, 2320; El. 1161. Fundon fífhund forþsnotterra they found five hundred very wise [men], 758; El. 379. forþ-snoter