The word Droping is misspelled against Drooping, which is present continuous of "Droop"
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Drooping has double "oo" is mispronounced as "o"
Remember double 'OO' in between the strings dr & ping which should not be misspelled with single 'O'
Wrong Spelling:  dr-o-ping 
Correct Spelling:  dr-oo-ping 
Find more incorrect spellings of Drooping to spell right way.