Well then answer it. Nobody's stoping you.
There is a seven letter word in the english language that contains ten words without rearranging any of the letters. What is the word?
Therein: the, there, he, her, here, herein, ere, re, rein, in. As osprey just noted, there are eleven words in therein, which could disqualify it.
There is also the more riddlish answer that each letter in the word is counted as a word, because each letter is in fact a word by itself.
There is one word in the English language (as far as I know) which contains three consecutive sets of double letters. What is it?
Bookkeeper, bookkeeping. (Also "Sweettooth" if you consider that as one word)