200 accepting European was sick (9)

I believe the answer is:

chundered

I'm a little stuck... Click here to teach me more about this clue!

'sick' is the definition.
The answer and definition are not the same part of speech. However, past participle verbs and adjectives can occasionally define each other.

'200 accepting european' is the wordplay.
I cannot really see how this works, but
'european' could be 'hun' (Hun is an example) and 'hun' is located in the answer.
This may be the basis of the clue (or it may be nonsense).

'was' acts as a link.

Can you help me to learn more?

I've seen this clue in The Independent.

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