Definition of unpriest in English:

unpriest

Pronunciation /(ˌ)ʌnˈpriːst/

verb

  • To deprive (a person) of the position, office, or character of priest.

Origin

Mid 16th century; earliest use found in John Bale (1495–1563), bishop of Ossory, evangelical polemicist, and historian. From un- + priest.