The word Sleyghtly is misspelled against Sleightly, an adverb meaning "Cinningly."
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Word contains consecutive vowels 'EI' in between alphabets sl & ghtly is misspelled as 'EY'
Wrong Spelling:  sl-ey-ghtly 
Correct Spelling:  sl-ei-ghtly 
Explore spell check of Sleightly to spell without errors.