The word Strightness is misspelled against Straightness, a noun meaning "A variant of Straitness."
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Word contains consecutive vowels 'AI' in between alphabets str & ghtness is misspelled as 'I'
Wrong Spelling:  str-i-ghtness 
Correct Spelling:  str-ai-ghtness 
Find more wrongly spelled words of Straightness to spell it well.