diction, intonation, phrasing, articulation, vibrato, elocution, inflections, nasal twang, cadences, eloquence, articulateness, nasality, musicality, melisma, monotone, glottal, timbre, pronunciation, passagework, vocalism, quaver, staccatos, recitative, diminuendo, pronounciation, mannerisms, spinto, legato, fortissimo, nuance, warble, inarticulateness, mozartian, phraseology, pianissimo, singsongy, tessitura, coloratura, grammar, diphthongs, grandiloquence, articulacy, declamation, wryness, prolixity, affectless, prosody, songlike, arioso, basso profundo, sibilant, huskiness, brooklynese, subjunctive, orotund, guttural, mozartean, pithiness, poeticism, gesticulation, emoting, assonance, mrs. malaprop, dulcet, expressiveness, politesse, falsetto, scansion, wordiness, idiom, vocals, preciseness, tunefulness, contralto, inaudibility, concision, slyness, vocalizing, lisping, euphony, volubility, received pronunciation, succinctness, cantabile, inoffensiveness, solecism, cor anglais, handelian, fingerpicking, lyricism, vocabulary, smarm, limpness, ingenuousness, earnestness, felicities, melody, unintelligibility, syllable, slightness, angularity, chirpiness, delineation, utterance, statement, declaration, rendition, description, enumeration, explication, recollection, elucidation, enunciations, account, answer, beginning, delimitation, pronouncement, restatement

mumbling

conversational, mumbling