Answer: inflection

AnswerCrossword Clue
INFLECTIONVoice modulation
inflectiona change in the form of a word, usually modification or affixation, signalling change in such grammatical functions as tense, voice, mood, person also INFLEXION
inflectionThe process or practice of inflecting words
inflectionA change in the form of a word (typically the ending) to express a grammatical function or attribute such as tense, mood, person, number, case, and gender
inflectionA change of curvature from convex to concave at a particular point on a curve
inflectionThe modulation of intonation or pitch in the voice
inflectionThe variation of the pitch of a musical note