inconnu

Etymology
From French

Noun

 * 1) A large salmonid fish,, with a large mouth with a protruding lower jaw and a high and pointed dorsal fin

Etymology
From.

Adjective

 * 1) unknown, obscure, unfamiliar, strange

Noun

 * 1) unknown, stranger

Usage notes

 * The word  refers to someone or something not previously encountered and totally unknown; a related term,, refers to something that has been encountered or someone acquainted, but is not entirely familiar.