The word Stifish is misspelled against Stiffish, an adjective meaning "Somewhat stiff."
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Stiffish has double "ff" is mispronounced as "f"
Remember double 'FF' in between the strings Sti & ish which should not be misspelled with single 'F'
Wrong Spelling:  Sti-f-ish 
Correct Spelling:  Sti-ff-ish 
Find more wrongly spelled words of Stiffish to spell it well.