Clashing plate host eats on (10)

I believe the answer is:

disharmony

'clashing' is the definition.
(thesaurus)

'plate host eats on' is the wordplay.
'plate' becomes 'dish' (type of plate).
'host' becomes 'army' (both can mean a large number of people).
'eats' means one lot of letters goes inside another.
'army' going around 'on' is 'armony'.
'dish'+'armony'='DISHARMONY'

(Another definition for disharmony that I've seen is " conflict".)

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