INCONNU Meaning of INCONNU in English [ 'a~kɒnu: , ˌa~kɒ'n(j)u: ]■ noun ( plural same) an edible freshwater whitefish related to the salmon. [ Stenodus leucichthys .]OriginC19: Fr., lit. 'unknown'. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004