1) Ad jingle 2) Boring speech pattern 3) Chantlike 4) Intoned 5) Like doggerel, often 6) Like some voices 7) Monotonous 8) Monotonous in cadence 9) Monotonous in pitch 10) Monotonous meter 11) Monotonous mode of speech 12) Monotonous rhythm 13) Monotonous tone 14) Monotonously rhythmic 15) Rhythmic 1) Chant 2) Chantlike 3) Intoned 4) Rhythmic 5) Rhythmical 6) Singalong 
• (n.) A drawling or monotonous tone, as of a badly executed song. • (a.) Drawling; monotonous. • (n.) Bad singing or poetry. • (v. i.) To write poor poetry.
Sing'song` adjective Drawling; monotonous. Sing'song` intransitive verb To write poor poetry. [ R.] Tennyson. Sing'song` noun 1. Bad singing or poetry. 2. A drawling or monotonous tone, as of a badly executed song. 
[n] - a regular and monotonous rising and falling intonation 2. [n] - (British) informal group singing of popular songs 3. [v] - move as if accompanied by a singsong 4. [v] - speak, chant, or declaim in a singsong
noun a regular and monotonous rising and falling intonation