denasalize
/ˌdɛnəˈsaɪz/Definitions
1. verb
to remove or reduce the nasal quality of a sound or voice; to make something sound less nasal
“The singer had to denasalize her tone to fit the opera’s requirements.”
2. verb
to eliminate or reduce the nasalization of a language or dialect
“The linguist worked to denasalize the local dialect to make it more widely intelligible.”