According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 10 words with the pattern ----C---CY. That is, ten letter words with 5th letter C and 9th letter C and 10th letter Y. In alphabetical order, they are:
articulacy
deficiency
efficiency
episcopacy
expectancy
immaculacy
impeccancy
inaccuracy
reluctancy
trenchancy
certainly
everybody
Kickstand is a 9 letter word. Kidnapped is a 9 letter word.
delivered
Inventing, investing.
exchanged
cadavered
solipsism
One such word is essential.
repechage
There aren't any 9 letter words ending in 'joust'.
Spaghetti
Overnight sojourn
antipathy