The word Buttresed is misspelled against Buttressed, which is past tense of "Buttress"
-->
Buttressed has double "ss" is mispronounced as "s"
Remember double 'SS' in between the strings buttre & ed which should not be misspelled with single 'S'
Wrong Spelling: buttre-s-ed
Correct Spelling: buttre-ss-ed
Check more misspelled words of Buttressed to spell it correct.