Constrant or Constraint: How To spell?

The word Constrant is misspelled against Constraint, a noun meaning "The act of constraining, or the state of being constrained; that which compels to, or restrains from, action; compulsion; restraint; necessity."

Word contains consecutive vowels 'AI' in between alphabets constr & nt is misspelled as 'A'
Wrong Spelling:  constr-a-nt 
Correct Spelling:  constr-ai-nt 
Find more incorrect spellings of Constraint to spell right way.

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