Akademik

clash
n. & v.
—n.
1 a a loud jarring sound as of metal objects being struck together. b a collision, esp. with force.
2 a a conflict or disagreement. b a discord of colours etc.
—v.
1 a intr. make a clashing sound. b tr. cause to clash.
2 intr. collide; coincide awkwardly.
3 intr. (often foll. by with) a come into conflict or be at variance. b (of colours) be discordant.
Derivatives:
clasher n.
Etymology: imit.: cf. clack, clang, crack, crash

Useful english dictionary. 2012.