Answer: toneless

AnswerCrossword Clue
TONELESSLacking inflection
tonelessquality of sound
tonelessany sound with reference to its quality, pitch, etc.
tonelessvocal sound
tonelesselegance
tonelessparticular style or manner
tonelessfirmness
tonelessto give a certain tone to
tonelesswithout tone
TONELESSWithout expression
TONELESSLacking expression
TONELESSLike a robot's voice
TONELESSNot at all musical
TONELESSWithout inflection or feeling
TONELESSUnvaried, in a way
TONELESSWithout modulation
TONELESSLacking in expression
TONELESSDevoid of expression.
TONELESSDevoid of color.
TONELESSLacking in modulation.
TONELESSDevoid of resiliency.
TONELESSUninflected
TONELESSHaving poor sound