Constriner or Constrainer: How To spell?

The word Constriner is misspelled against Constrainer, a noun meaning "One who constrains."

Word contains consecutive vowels 'AI' in between alphabets constr & ner is misspelled as 'I'
Wrong Spelling:  constr-i-ner 
Correct Spelling:  constr-ai-ner 
Find more incorrect spellings of Constrainer to spell right way.

You might be interested to know

Dimios or Daimios?

Derinment or Derainment?

Distrining or Distraining?