The word Halloed is misspelled against Hallooed, which is past tense of "Halloo"
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Hallooed has double "oo" is mispronounced as "o"
Remember double 'OO' in between the strings hall & ed which should not be misspelled with single 'O'
Wrong Spelling:  hall-o-ed 
Correct Spelling:  hall-oo-ed 
Find more incorrect spellings of Hallooed to spell right way.