Chucked conservative English in one century (9)

'chucked' is the definition.
Both the answer and definition are past participle verbs.
Perhaps there's an association between them I don't understand?

'conservative english in one century' is the wordplay.
'conservative' becomes 'C' (UK political abbreviation).
'english' becomes 'E' (abbreviation).
'in' means one lot of letters goes inside another.
'one century' becomes 'hundred' (synonyms).
'e' put into 'hundred' is 'hundered'.
'c'+'hundered'='CHUNDERED'

Can you help me to learn more?