The word Oflet is misspelled against Offlet, a noun meaning "A pipe to let off water."
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Offlet has double "ff" is mispronounced as "f"
Remember double 'FF' in between the strings O & let which should not be misspelled with single 'F'
Wrong Spelling:  O-f-let 
Correct Spelling:  O-ff-let 
Explore spell check of Offlet to spell without errors.