Dumvir or Duumvir: How To spell?
The word Dumvir is misspelled against Duumvir, a noun meaning "One of two Roman officers or magistrates united in the same public functions."
Duumvir has double "uu" is mispronounced as "u"Remember double 'UU' in between the strings d & mvir which should not be misspelled with single 'U'
Wrong Spelling:  d-u-mvir  Correct Spelling:  d-uu-mvir 
Check more misspelled words of Duumvir to spell it correct.