What is the meaning of Clashing?

present participle and gerund of clash

A clash; the sound or action of clashing; violent collision.

conflicting, contrasting, or contrary; inconsonant, incompatible, or irreconcilable

mismatched, inharmonious, discordant or dissonant, not fitting well together (especially in regards to aesthetics, colors, clothing, or sounds)

adverse or antagonistic; disagreeing or opposing

Producing a clash or series of clashes.

Source: wiktionary.org