The Collaborative International Dictionary
Unendly
Unendly \Un*end"ly\, a. [Pref. un- not + end + -ly.]
Unending; endless. [Obs.]
--Sir P. Sidney.
Wiktionary
unendly
a. (context rare English) Having no end; infinite; endless; unending. adv. In an unendly or infinite manner; infinitely; unendingly.