dēop

dēop, adj: deep, extending downwards; describing the extreme of range (of understanding, thought, doctrine, oaths, etc.), profound, complete. (DAY-op / ˈdeːɔp)

Medieval manuscript illustration of a whale underwater gulping several fish into its mouth.
Bestiaire of Guillaume le Clerc; France, late 13th century; Bibliothèque Nationale de France, fr. 14964, f. 150v. [bestiary.ca]

endlyfta

endlyfta, n/adj/numeral: the eleventh. (END-LUEF-ta / ˈɛnd-ˌlyf-ta)

On this 11th day of the 11th month, it’s exactly 11 years since I started the Old English Word of the Day! Homeliarum, 12th century; Bibliothèque nationale de France, Latin 12409, f. 4r. [gallica.bnf.fr]