The Collaborative International Dictionary
Unbegot
Unbegot \Un`be*got"\, Unbegotten \Un`be*got"ten\, a. [Pref. un- not + begot, begotten.] Not begot; not yet generated; also, having never been generated; self-existent; eternal.
Wiktionary
unbegot
a. (archaic form of unbegotten English)