Unstrin or Unstrain: How To spell?

The word Unstrin is misspelled against Unstrain, a verb meaning "To relieve from a strain; to relax."

Word contains consecutive vowels 'AI' in between alphabets unstr & n is misspelled as 'I'
Wrong Spelling:  unstr-i-n 
Correct Spelling:  unstr-ai-n 
Find more wrongly spelled words of Unstrain to spell it well.

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