Mumy or Mummy: How To spell?
The word Mumy is misspelled against Mummy, a noun meaning "A brown color obtained from bitumen. See Mummy brown (below)."
Mummy has double "mm" is mispronounced as "m"Remember double 'MM' in between the strings mu & y which should not be misspelled with single 'M'
Wrong Spelling:  mu-m-y  Correct Spelling:  mu-mm-y 
Check more misspelled words of Mummy to spell it correct.