Intone
Part of speech: verb
Definition: To give tone or variety of tone to; to vocalize. To utter with a musical or prolonged note or tone; to speak or recite with singing voice; to chant; as, to intone the church service. To utter a tone; utter a protracted sound.
Intonate
Part of speech: verb
Definition: To intone; to utter.To thunder or to utter in a sonorous or thunderous voice.