Ascerteaner or Ascertainer: How To spell?

The word Ascerteaner is misspelled against Ascertainer, a noun meaning "One who ascertains."

Word contains consecutive vowels 'AI' in between alphabets ascert & ner is misspelled as 'EA'
Wrong Spelling:  ascert-ea-ner 
Correct Spelling:  ascert-ai-ner 
Explore spell check of Ascertainer to spell without errors.

You might be interested to know

Bealiff or Bailiff?

Bobtealed or Bobtailed?

Catchdrean or Catchdrain?