Synonyms for Singsong (same or very similar meaning)
WordNet sense 1 (uttered in a monotonous cadence or rhythm as in chanting):
chantlike, intoned
WordNet sense 2 (recurring with measured regularity):
rhythmic, rhythmical
WordNet sense 3 (informal group singing of popular songs):
singalong
From the ODE community, based on WordNet
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