The word Smitlish is misspelled against Smittlish, an adjective meaning "Infectious; catching."
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Smittlish has double "tt" is mispronounced as "t"
Remember double 'TT' in between the strings smi & lish which should not be misspelled with single 'T'
Wrong Spelling:  smi-t-lish 
Correct Spelling:  smi-tt-lish 
Find more wrongly spelled words of Smittlish to spell it well.