definition of
dissonance

[1] #1 dissonance n. [disagreement, dissension] a conflict of people's opinions or actions or characters. wn

[2] #2 dissonance n. [noise, racket] the auditory experience of sound that lacks musical quality; sound that is a disagreeable auditory experience; "modern music is just noise to me". wn

[3] #3 dissonance n. disagreeable sounds. wn