fleuve
tributaire.
I believe you are asking about du jour, which means "of the day"
That is a big mystery why he never did. Although he learned two words "lat" (milk) "oh, Deau" (Oh, God). It's true Victor was abandoned in the wild from human society. And at first many citizens believed that Victor was a deaf-mute even though he can hear pretty well (but never reacted to certain sounds or speech). It's true during his early captivity, he never understood speech. In Paris, Victor was examined to be mentally retarded from birth by Phillipe Pinel (a man who was an expert on mentally retarded and incurable individuals). A young medical student Itard saw a different opinion that Victor could've lived in the wild all his life and that's why he became mute. He thought because of the isolation Victor was kept in for so many years can be cured. But language can only occur in early childhood rather than in adolescence. Victor was about 12 years old when he was in the care of Itard. Some information nowadays say that Victor had severe autism and that was the reason why he never learned speech and he was never taught speech before in his time in captivity (because of the other rumors).