Stamerer or Stammerer: How To spell?

The word Stamerer is misspelled against Stammerer, a noun meaning "One who stammers."

Stammerer has double "mm" is mispronounced as "m"
Remember double 'MM' in between the strings sta & erer which should not be misspelled with single 'M'
Wrong Spelling:  sta-m-erer 
Correct Spelling:  sta-mm-erer 
Explore spell check of Stammerer to spell without errors.

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