Synonyms for Intone (same or very similar meaning)
WordNet sense 1 (utter monotonously and repetitively and rhythmically):
chant, toneWordNet sense 2 (speak carefully, as with rising and falling pitch or in a particular tone):
intonateWordNet sense 3 (recite with musical intonation; recite as a chant or a psalm):
cantillateFrom the ODE community, based on WordNetadd/edit