The word Ideis is misspelled against Ideas, which is plural of "Idea"
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Ideas has vowels 'ea' together mispronounced as 'ei'
Word contains consecutive vowels 'EA' in between alphabets id & s is misspelled as 'EI'
Wrong Spelling:  id-ei-s 
Correct Spelling:  id-ea-s 
Find more wrongly spelled words of Ideas to spell it well.