The word Dereinment is misspelled against Derainment, a noun meaning "The act of deraigning."
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Word contains consecutive vowels 'AI' in between alphabets der & nment is misspelled as 'EI'
Wrong Spelling:  der-ei-nment 
Correct Spelling:  der-ai-nment 
Find more wrongly spelled words of Derainment to spell it well.