Dissonant is an adjective used to describe noise that's harsh and inharmonious. It's also used to describe things that are in stark disagreement or that lack consistency.

Is Disconsonant a word?

adjective. 1Not in accord or agreement; at variance; incongruous, incompatible.

What is the verb form of dissonance?

History and Etymology for dissonant

Middle English dissonaunte, from Latin dissonant-, dissonans, present participle of dissonare to be discordant, from dis- + sonare to sound — more at sound entry 1.