What is the meaning of intone?

verb

• Utter monotonously and repetitively and rhythmically.
  • usage: "The students chanted the same slogan over and over again"
  • synonyms: tone, chant
• Recite with musical intonation; recite as a chant or a psalm.
  • usage: "The rabbi chanted a prayer"
  • synonyms: chant, intonate, cantillate
• Speak carefully, as with rising and falling pitch or in a particular tone.
  • usage: "please intonate with sadness"
  • synonyms: intonate