Grisulle or Grisaille: How To spell?

The word Grisulle is misspelled against Grisaille, a noun meaning "A kind of French fancy dress goods."

Word contains consecutive vowels 'AI' in between alphabets gris & lle is misspelled as 'U'
Wrong Spelling:  gris-u-lle 
Correct Spelling:  gris-ai-lle 
Check more misspelled words of Grisaille to spell it correct.

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