intone
v. US //ˌɪnˈtoʊn// UK //ɪntˈəʊn// in·tone
From Middle English entune, entone, from Old French entoner, from Medieval Latin intonō, from in- (inchoative prefix) + tonus (“pitch, tone”) + -ō (verb-forming suffix); doublet of intonate. Cognate with French entonner, Italian intonare.