Ridaiu or Rideau: How To spell?

The word Ridaiu is misspelled against Rideau, a noun meaning "A small mound of earth; ground slightly elevated; a small ridge."

Rideau has vowels 'ea' together mispronounced as 'ai'
Word contains consecutive vowels 'EA' in between alphabets rid & u is misspelled as 'AI'
Wrong Spelling:  rid-ai-u 
Correct Spelling:  rid-ea-u 
Check more misspelled words of Rideau to spell it correct.

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