--> Knapbottle has double "tt" is mispronounced as "t"
Remember double 'TT' in between the strings knapbo & le which should not be misspelled with single 'T'
Wrong Spelling:  knapbo-t-le 
Correct Spelling:  knapbo-tt-le 
Find more incorrect spellings of Knapbottle to spell right way.