French has a sound that does not exist in English and many other languages. It is the labialized palatal approximant. The places of articulation are the lips and the palate.
Words with the labialized palatal approximant include huit (eight), minuit (midnight), pluie (rain), huile (oil) and cuisse (thigh). To produce the labial palatal approximant, two constrictions are needed. One is the tongue on the palate, and the other is rounding of the lips. The labialized palatal approximant is also known as the labiopalatal approximant.
The labialized palatal approximant is used in French. It is relatively rare among the lnaguages of the world. Other languages that have the labialized palatal approximant include Breton, Mandarin and Occitan.