Reser or Raiser: How To spell?

The word Reser is misspelled against Raiser, a noun meaning "One who, or that which, raises (in various senses of the verb)."

Word contains consecutive vowels 'AI' in between alphabets r & ser is misspelled as 'E'
Wrong Spelling:  r-e-ser 
Correct Spelling:  r-ai-ser 
Explore spell check of Raiser to spell without errors.

You might be interested to know

Restrening or Restraining?

Senthood or Sainthood?

Stel or Stail?