Of music or musical notes: dissonant, lacking in harmony. More generally: (of sound): jarring or harsh to listen to; clashing.

Sounding with harsh or rough vibration; grating; hence, inharmonious, discordant, out of tune; grating upon the ear or (transferred) the feelings…

Disagreeing or discordant in sound, inharmonious; harsh-sounding, unmelodious, jarring.

Having no sweetness of tone; untuneful, unmusical, unmelodious, harsh-sounding.

= discordant, adj. (in various senses).

Not melodious; unmelodious.

= discordant, adj. (esp. in sense 2a).

Music. Inharmonious, jarring, out of tune. Cf. absurdity, n. 1. Obsolete. rare.

Not sounding in harmony; unmelodious.

Thin, meagre. Now chiefly as a reminiscence of Milton's use, usually with the sense: Harsh, unmelodious.

Not melodious.

Of sounds: Unharmonious, discordant.

= disharmonic, adj.

(un-, prefix1 affix 1.)

Dissonant.

Of sound: Not in harmony; sounding disagreeably; discordant, untuneful.

Of sound, esp. music: not tuneful or harmonious; harsh, dissonant. Cf. discordant, adj. 2a.

That is the opposite of musical; extremely unmusical. Also as n.

Having sore or deafened ears. Formerly also: deafening, cacophonous.

making or resembling the sound a tin kettle makes when struck; tinny, noisy.

Ill-sounding, having a harsh or unpleasant sound.

rare. Characterized by an absence of musical notes or notation.

Of music or noise: cacophonous, discordant, noisy.

Like or resembling tin or that of tin; characteristic of tin; esp. of sounds; in Painting, hard, crude, metallic. Also applied dismissively to (a…

figurative. Of harmonies (esp. vocal harmonies): harmonically complex or unconventional; dissonant.