Could we have the excerpt? Then I will try and answer.
Restoration Comedy was the result of a revival of the theatre 1660, aftering being banned during the Puritan days of England.
The genre was quite raunchy for the time, and mocked many elements of contemporary British society, like Wilde's play did. It also did not attempt to impose a morality on its works, preferring rather to create art for the sake of art, like The Importance of Being Earnest.
Although this word was made up in order to be a contender for the longest word in English, it can be broken down into smaller chunks in order to understand it.
Anti- means that you are against something; monopoly means the exclusive control over something; geographic is related to geography; and the remaining part has to do with nationalism.
So this word means something like 'a nationalistic feeling of being against geographic monopoly,' but you can see that it doesn't have much sense.
