Un-declínigendlíc

According to the Old English Dictionary:

un-declínigendlíc

adj. Indeclinable :-- Nihil náht indeclinabile, ðæt is, undeclínigendlíc, Ælfc. Gr. 9, 8; Zup. 39, 6: 38; Zup. 223, 1: 44; Zup. 258, 1. Indeclinabilia, ðæt synd, undeclíniendlíce, 9, 78; Zup. 75, 3. un-declinigendlic