Un-geeahtendlíc

According to the Old English Dictionary:

un-geeahtendlíc

adj. Inestimable :-- Mid ða sylfan mycelnysse ðes ungeæhtendlícan (ungeendedlícan and [un]geeahtendlícan, MS. B.) gerýnes ipsa inaestimabilis mysterii magnitudine, Bd. 1, 27; S. 496, 11. un-geeahtendlic