WordWeb Online

1. Uttered in a monotonous cadence or rhythm as in chanting
   "their chantlike intoned prayers";
   - chantlike, singsong

1. Utter monotonously and repetitively and rhythmically
   - tone, chant
    
2. Recite with musical intonation; recite as a chant or a psalm
   "The rabbi intoned a prayer";
   - chant, intonate, cantillate [rare]
    
3. Speak carefully, as with rising and falling pitch or in a particular tone
   "please intone with sadness";
   - intonate

See also: rhythmic, rhythmical

Type of: judge, label, mouth, pronounce, sing, speak, talk, utter, verbalise [Brit], verbalize