Gamer or Gammer: How To spell?
The word Gamer is misspelled against Gammer, a noun meaning "An old wife; an old woman; -- correlative of gaffer, an old man."
Gammer has double "mm" is mispronounced as "m"Remember double 'MM' in between the strings ga & er which should not be misspelled with single 'M'
Wrong Spelling:  ga-m-er  Correct Spelling:  ga-mm-er 
Explore spell check of Gammer to spell without errors.