Dissonance(n.) A mingling of discordant sounds; an inharmonious combination of sounds; discord.
Dissonance(n.) Want of agreement; incongruity.
Dissonancy(n.) Discord; dissonance.
Dissonant(a.) Sounding harshly; discordant; unharmonious.
Dissonant(a.) Disagreeing; incongruous; discrepant, -- with from or to.

Words within dissonate