Seilless or Sailless: How To spell?

The word Seilless is misspelled against Sailless, an adjective meaning "Destitute of sails."

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

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