Sylable or Sailable: How To spell?

The word Sylable is misspelled against Sailable, an adjective meaning "Capable of being sailed over; navigable; as, a sailable river."

Word contains consecutive vowels 'AI' in between alphabets s & lable is misspelled as 'Y'
Wrong Spelling:  s-y-lable 
Correct Spelling:  s-ai-lable 
Explore spell check of Sailable to spell without errors.

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