Synonyms for Intone:

adj.

articulate (adjective)
sing, recite, hum.

n.

diction, roll/trip/slip off the tongue, stammer, articulation, stutter, pronunciation. intone (noun)
intonate, chant, cantillate.

v.

communication (verb)
chant.
utter (verb)
articulate, recite, chant, sing.
voice (verb)
emit, enunciate, cry, whisper, pronounce, groan, mutter, utter, speak, murmur, articulate, voice, exclaim, moan.

Other synonyms:

diction, stammer, pronunciation, stutter. articulation. Other relevant words:
cantillate, pronunciation, hum, stammer, intonate, recite, articulation, stutter, sing, diction, chant.