Overcuning or Overcunning: How To spell?
The word Overcuning is misspelled against Overcunning, an adjective meaning "Exceedingly or excessively cunning."
Overcunning has double "nn" is mispronounced as "n"Remember double 'NN' in between the strings overcu & ing which should not be misspelled with single 'N'
Wrong Spelling:  overcu-n-ing  Correct Spelling:  overcu-nn-ing 
Check more misspelled words of Overcunning to spell it correct.