Underdrein or Underdrain: How To spell?

The word Underdrein is misspelled against Underdrain, a noun meaning "An underground drain or trench with openings through which the water may percolate from the soil or ground above."

Word contains consecutive vowels 'AI' in between alphabets underdr & n is misspelled as 'EI'
Wrong Spelling:  underdr-ei-n 
Correct Spelling:  underdr-ai-n 
Find more wrongly spelled words of Underdrain to spell it well.

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