Dissonance
Pronunciation : Dis"so*nance
Part of Speech : n.
Etymology : [L. dissonantia: cf. F. dissonance.]
Definition : 1. A mingling of discordant sounds; an inharmonious combination of sounds; discord. Filled the air with barbarous dissonance. Milton.
2. Want of agreement; incongruity. Milton.
Source : Webster's Unabridged Dictionary, 1913