The word Opilative is misspelled against Oppilative, an adjective meaning "Obstructive."
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Oppilative has double "pp" is mispronounced as "p"
Remember double 'PP' in between the strings o & ilative which should not be misspelled with single 'P'
Wrong Spelling:  o-p-ilative 
Correct Spelling:  o-pp-ilative 
Find more wrongly spelled words of Oppilative to spell it well.