Answer:

intone

AnswerCrossword Clue
INTONESpeak at a level pitch
INTONEEnunciate slowly
INTONERecite mechanically
INTONECantillate
INTONEUtter
INTONEDrone
INTONEChant
INTONEPerform part of a liturgical service
INTONEVocalize