Asseler or Assailer: How To spell?

The word Asseler is misspelled against Assailer, a noun meaning "One who assails."

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

You might be interested to know

Ben or Bain?

Breding or Braiding?

Chened or Chained?