American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "toneless" in a sentence
"Long pauses came between each of these remarks; they were uttered in toneless and monotonous voices."
"Ghost will be a hybrid tone + noise codec that splits and separately encodes strong sinusoids [sine waves representing pure tones] from the time-domain 'toneless' signal [that's less regular]."
"Up here at Gillette Stadium, the Patriots are cool, flat with their emotion and toneless in their public moments."