intonation

She well knew the power of intonation, and thought that, in the absence of the curled lip, the contemptuous twitch of the nose, and the supercilious toss of the head, her message might be acceptable for Louisa's sake,...

This additional cause of the intonation of thunder, together with the simile with which it is illustrated, is copied from our poet, both by Pliny, Nat. Hist. ii, 431, and Isidorus, Orig. xiii.

Her intonation was false.