1. sounds or speech delivered in a single unvarying tone without changes in pitch
2. people who speak in a monotone manner

1. speaks or delivers in a single unvarying tone

Examples

• The professor’s monotones put half the class to sleep.
• Her voice fell into monotones when she was tired.
• The robot monotones its responses without any emotion.
• The lecture was delivered in dull monotones.
• He monotones his way through the presentation.
• The announcer’s monotones made the game sound boring.
• She monotones her lines instead of acting them out.