--> Syllogistically has double 'll' twice appearing mispronounced as 'l'
Remember double 'LL' appears twice in this word which should not be misspelled with single 'L'
Wrong Spelling:  sy-l-ogistica-l-y 
Correct Spelling:  sy-ll-ogistica-ll-y 
Find more incorrect spellings of Syllogistically to spell right way.