1. Lacking in tone or expression
   "his toneless mechanical voice"

See also: tonelessly

Antonym: toned

• middle-of-the-road
• middle-sized
• middlebreaker
• middlebrow
• middleman
• middlemost
• Middleton
• middleware
• middleweight
• middling
• middlingly
• middy
• middy blouse
• Mideast
• midfield
• midfielder
• Midgard
• midge
• midget
• midgrass
• midgut
• midi
• Midi-Pyrenees
• midinette
• midiron