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11 points
ILLUSORY is validvalid
based on illusion [adj] : ILLUSORILY [adv], ILLUSORINESS [n]
based on illusion, also ILLUSIVE [adj ILLUSORILY]
based on illusion [adj] : ILLUSORILY [adv], ILLUSORINESS [n]
based on illusion, also ILLUSIVE [adj ILLUSORILY]