Definition - The ability to speak a language that you have never learned.
Note: Some claim that people who speak in tongues are often xenoglossic.

Example -
No. I don't speak English. Not a single word!

Etymology -
The word derives from the Greek xenos, foreign + glossa, tongue.

Oxford English Dictionary -
Its first citation is from 1914:
*Xenoglossy is well known not to be unusual in automatic writing; sometimes even the ‘automatist’ speaks or writes languages of which he is completely ignorant.
Note: The first citation for the word xenoglossia is from 1978.
(A. Teixeira de Mattos tr. Maeterlinck's Unknown Guest iii. 101)

Please comment