The word Pekaboo is misspelled against Peekaboo, a noun meaning "A child's game; bopeep."
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Peekaboo has double "ee" is mispronounced as "e"
Remember double 'EE' in between the strings P & kaboo which should not be misspelled with single 'E'
Wrong Spelling:  P-e-kaboo 
Correct Spelling:  P-ee-kaboo 
Find more incorrect spellings of Peekaboo to spell right way.