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inconnu

noun
in·​con·​nu | \ ¦inkə¦n(y)ü, ¦iŋk-; ¦aⁿkə¦nᵫ̅\
plural -s

Definition of inconnu

1 : an unknown person : stranger
2 : a large oily soft-fleshed food fish (Stenodus leucichthys) related to the whitefish and found in Alaska, northwestern Canada, and adjoining Siberian waters

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History and Etymology for inconnu

French, from in- in- entry 1 + connu, past participle of connaître to know, from Latin cognoscere

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