Án-stræc

According to the Old English Dictionary:

án-stræc

adj. [án one; strec stretch, from streccan to stretch?] Of one stretch, constant, resolute, determined; pertinax :-- Ða ánstræcan sint to monianne admonendi sunt pertinaces, Past. 42, 2; Hat. MS. 58a. 24. an-stræc