dissonate
Definitions
To produce a harsh, disagreeable combination of sounds; to be discordant.
To be in a state of disagreement or inconsistency; to clash.
Examples
The harsh, metallic sounds began to dissonate against the soft melody of the piano.
His radical political views often dissonate with the traditional values held by his family.
The choir members struggled to stay in tune, causing their voices to dissonate during the final chorus.