nasalize

But just as often, the vocals are squeezed, nasalized, multiplied, pitch-shifted or radically disembodied.

From New York Times ● Sep. 5, 2018

In this recording, the instrument sounds with a rich, full voice slightly nasalized by those vibrating wires.

From Time Magazine Archive

It must be ruled entirely out of court, for instance, in two of the three European examples I have instanced; both nasalized vowels and the Slavic “yeri” are demonstrably of secondary origin in Indo-European.

From Language An Introduction to the Study of Speech by Edward Sapir

The Germanic languages as a whole have not developed nasalized vowels.

From Language An Introduction to the Study of Speech by Edward Sapir

They may become aspirated to bh, dh, gh or spirantized or nasalized or they may develop any other peculiarity that keeps them intact as a series and serves to differentiate them from other series.

From Language An Introduction to the Study of Speech by Edward Sapir

Footnote 17: Aside from the involuntary nasalizing of all voiced sounds in the speech of those that talk with a “nasal twang.”

From Language An Introduction to the Study of Speech by Edward Sapir

This nasalizing makes them, in fact, distinct elements; and the primary sounds of the language may therefore be reckoned at fourteen.

From The Iroquois Book of Rites by Horatio Hale

Our Southern accent, with its drawling of words and slurring of consonants, our Middle-Western accent, with its stressed articulation of "r's" and its nasalizing tendencies, are instances of this persistence.

From Human Traits and their Social Significance by Irwin Edman