Overmaner or Overmanner: How To spell?
The word Overmaner is misspelled against Overmanner, an adverb meaning "In an excessive manner; excessively."
Overmanner has double "nn" is mispronounced as "n"Remember double 'NN' in between the strings overma & er which should not be misspelled with single 'N'
Wrong Spelling:  overma-n-er  Correct Spelling:  overma-nn-er 
Explore spell check of Overmanner to spell without errors.