Foreruner or Forerunner: How To spell?
The word Foreruner is misspelled against Forerunner, a noun meaning "A messenger sent before to give notice of the approach of others; a harbinger; a sign foreshowing something; a prognostic; as, the forerunner of a fever."
Forerunner has double "nn" is mispronounced as "n"Remember double 'NN' in between the strings foreru & er which should not be misspelled with single 'N'
Wrong Spelling:  foreru-n-er  Correct Spelling:  foreru-nn-er 
Check more misspelled words of Forerunner to spell it correct.