dissonant
adjective
[ ˈdɪs(ə)nənt ]
• lacking harmony.
• "irregular, dissonant chords"
Similar:
inharmonious,
disharmonious,
discordant,
unmelodious,
atonal,
tuneless,
off-key,
cacophonous,
harsh,
strident,
grating,
jarring,
Origin:
late Middle English (in the sense ‘clashing’): from Old French, or from Latin dissonant- ‘being discordant’, from the verb dissonare, from dis- ‘apart’ + sonare ‘to sound’.