"Stinty" and "introrres" do not appear to be English words. Please check your spelling and rewrite your question.
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 9 words with the pattern S-I-TY. That is, six letter words with 1st letter S and 3rd letter I and 5th letter T and 6th letter Y. In alphabetical order, they are: shifty shinty shirty shitty slitty snifty stilty stinty swifty
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 28 words with the pattern --I-TY. That is, six letter words with 3rd letter I and 5th letter T and 6th letter Y. In alphabetical order, they are: chitty clifty dainty drifty fainty feisty flinty flirty gaiety glinty gritty guilty moiety painty pointy shifty shinty shirty shitty slitty snifty stilty stinty swifty thirty twisty ubiety wristy