Sentence:  That a writer who is gay cannot be serious is a common professional illusion , sedulously fostered by all too <WSD>many</WSD> academics who mistakenly believe that their frivolous efforts should be taken seriously because they are expressed with that dreary solemnity which is the only mode of expression their authors are capable of . 
Meaning of the word marked with <WSD> tags:  a quantifier that can be used with count nouns and is often preceded by `as' or `too' or `so' or `that'; amounting to a large but indefinite number