Mountainer or Mountaineer: How To spell?

The word Mountainer is misspelled against Mountaineer, a noun meaning "A rude, fierce person."

Mountaineer has double "ee" is mispronounced as "e"
Remember double 'EE' in between the strings Mountain & r which should not be misspelled with single 'E'
Wrong Spelling: Mountain-e-r
Correct Spelling: Mountain-ee-r
Check more misspelled words of Mountaineer to spell it correct.