Underdran or Underdrain: How To spell?

The word Underdran 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 'A'
Wrong Spelling:  underdr-a-n 
Correct Spelling:  underdr-ai-n 
Explore spell check of Underdrain to spell without errors.

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