
Toneless
Lack of Melody
Refers specifically to sound that lacks variation in pitch, not just volume or pace.

Even the most exciting story sounds uninteresting in a toneless delivery.
Not Musical
Indicates an absence of any melodious qualities that you would typically find in music.

The beginner's violin recital was a challenge to listen to, quite toneless.
Neutral Sound
Describes a voice that does not hold any identifiable emotion or mood.

The dispatcher's toneless voice was calm, revealing no panic during the emergency.
Compare with
DeadpanDullEmotionalExpressionFlatLifelessMonotonousUninspiring
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