Definition of unnaturalizable in English:

unnaturalizable

adjective

(also unnaturalisable)
  • That cannot or may not be naturalized.

Pronunciation

unnaturalizable

/(ˌ)ʌnˈnatʃ(ə)rəlʌɪzəbl/ /(ˌ)ʌnˈnatʃ(ə)r(ə)lʌɪzəbl/

Origin

Mid 19th century; earliest use found in Edward Bulwer-Lytton (1803–1873), writer and politician. From un- + naturalize + -able.