vocalize

transitive verb vocalized, vocalizing

1. 1. to give utterance to; express with the voice; speak or sing
   2. to make capable of vocal expression; make vocal, or articulate
2. to add diacritical vowel marks to (the exclusively consonantal characters of certain languages such as Hebrew)
3. Phonet.
   1. to change into or use as a vowel
   2. to voice

intransitive verb

1. to make vocal sounds; speak or sing; specif., to do a singing exercise, using various vowel sounds
2. to be changed into a vowel; become vocalic