Noun

• S: (n) intonation, chanting (the act of singing in a monotonous tone)

Verb

• S: (v) chant, intone, intonate, cantillate (recite with musical intonation; recite as a chant or a psalm) "The rabbi chanted a prayer"
• S: (v) tone, chant, intone (utter monotonously and repetitively and rhythmically) "The students chanted the same slogan over and over again"