There are 30 11 letter words starting with Q in AltF Lexicon. Two conditions, both on spelling: the first letter is Q, and the word has exactly 11 letters. Hyphens and apostrophes are not counted as letters. The list is ordered by commonness — how often the word turns up in a large corpus of everyday English — then alphabetically, so the ones you already know come first.
Definitions come from Princeton's WordNet. Every word below the fold links to the same treatment — meaning, syllables, stress and pronunciation.
30 words, 200 to a page, most common first. The dots after each word are its commonness band.
The two wider lists this one sits inside.
Words and definitions come from Princeton University’s WordNet; commonness is measured against a corpus of everyday English. Full sources and licences.
Every word list