The word Cresy is misspelled against Cressy, an adjective meaning "Abounding in cresses."
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Cressy has double "ss" is mispronounced as "s"
Remember double 'SS' in between the strings cre & y which should not be misspelled with single 'S'
Wrong Spelling:  cre-s-y 
Correct Spelling:  cre-ss-y 
Explore spell check of Cressy to spell without errors.