Restren or Restrain: How To spell?

The word Restren is misspelled against Restrain, a verb meaning "To draw back again; to hold back from acting, proceeding, or advancing, either by physical or moral force, or by any interposing obstacle; to repress or suppress; to keep down; to curb."

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

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