Hallo or Halloo: How To spell?
The word Hallo is misspelled against Halloo, a noun meaning "A loud exclamation; a call to invite attention or to incite a person or an animal; a shout."
Halloo has double 'oo' in the end mispronounced as 'o'Remember double 'OO' appears in the end of this word which should not be misspelled with single 'O'
Wrong Spelling:  hall-o  Correct Spelling:  hall-oo 
Find more incorrect spellings of Halloo to spell right way.