nonmonotonic

staccato, affectless, guttural, singsongy, intonations, mumble, basso profundo, droning, drawl, cadences, nasal twang, enunciation, monosyllables, quaver, sibilant, demeanor, patter, tones, gruff, brooklynese, facial expression, inflections, timbre, recitative, orotund, impassivity, stoic, emoting, falsetto, stammering, diphthongs, vibrato, rasp, voice, tessitura, tremolos, basso, baritone voice, narration, wryness, diction, sotto voce, mannerisms, rheumy, soliloquy, professorial, growl, sighing, arioso, baritone, rote, bland, passagework, sarcasms, throaty, imperturbability, punchiness, lank, wittedness, legato, blankness, chromatics, sandpapery, sunniness, drollness, inarticulateness, songlike, lectern, poeticism, quippy, terseness, seraphic, gibberish, smirk, moans, reedy, gabble, accent, bombast, woodenness, shouty, frowny, dulcet, nasality, lilting, keening, glower, articulacy, shrilling, affectation, eloquence, expository, shtick, declamation, mien, curtness, scowl, fidgeting, brooding, chirpiness, lisps, phrasing, drone, chanting, humming, singsong, chirping, ticking, moan, moaning, whine, whir, whistling, hum, monotony, rustle, tinkle, creaking, tinkling, tolling, monotonic, linearized, multilinear, linear, nonlinear, piecewise, differentiable, polynomial, bilinear, deterministic, ergodic, hamiltonian, invariant, inverse, parameter, quadratic, enumerative, kinematic, lognormal, matching

chanted, tonelessly

intonation, pitch contour

decreasing monotonic, drone, droning, increasing monotonic, monotonic, monotonous, unmelodic, unmelodious, unmusical