U with tilde (У̃ у̃; italics: У̃ у̃) is a letter of the Cyrillic script.
U with tilde is used in the Khinalug language where it represents a nasalized close back rounded vowel /ũ/.Khinalug (каьтш мицI / kätš micʼ)
See also Ũ ũ : Latin letter Ũ Cyrillic characters in Unicode
References Khinalug (каьтш мицI / kätš micʼ)