The word Cusable is misspelled against Causable, an adjective meaning "Capable of being caused."
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Word contains consecutive vowels 'AU' in between alphabets c & sable is misspelled as 'U' as letter 'A' is phonetically ignored
Wrong Spelling:  c-u-sable 
Correct Spelling:  c-au-sable 
Check more misspelled words of Causable to spell it correct.