The word Deustically is misspelled against Deistically, an adverb meaning "After the manner of deists."
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Word contains consecutive vowels 'EI' in between alphabets d & stically is misspelled as 'EU'
Wrong Spelling:  d-eu-stically 
Correct Spelling:  d-ei-stically 
Check more misspelled words of Deistically to spell it correct.