The word Dof is misspelled against Doff, a verb meaning "To put off dress; to take off the hat."
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Doff has double 'ff' in the end mispronounced as 'f'
Remember double 'FF' appears in the end of this word which should not be misspelled with single 'F'
Wrong Spelling:  do-f 
Correct Spelling:  do-ff 
Find more incorrect spellings of Doff to spell right way.