Answer: tone

AnswerCrossword Clue
TONEVoice quality
TONEShade
TONEStrengthen
TONEVocal pitch
TONEModerate, with "down"
TONE... -deaf: musically inept
TONEBeep, e.g.
TONEInflection
TONEStrengthen, with "up"
TONESignal to start talking
TONEVoice mail message signal
TONEMood
TONEColor shade
TONEPhone message ender
TONESignal to begin speaking, perhaps
TONEWhat emoticons help convey
TONEVoice mail cue
TONEWord after dial or earth
TONEWork on, as abs
TONEMusical quality
toneto make (a color) less intense in hue; subdue
TONE"I don't like your ..., missy!"
TONEMusician's concern
TONESound quality
TONEThe sound of music
TONEVocal quality
TONEStrad feature
TONETwo-.. (like some cars)
TONEMuscle quality
TONEPitch
TONEMusical sound
TONEAnswering-machine sound
TONE"Watch your ... with me, mister"
TONETissue firmness
TONEColor character
TONEColor quality
TONEAtmosphere
TONEColoration
TONETime signal, maybe
TONEVoice-mail sound