The word Decreable is misspelled against Decreeable, an adjective meaning "Capable of being decreed."
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Decreeable has double "ee" is mispronounced as "e"
Remember double 'EE' in between the strings Decr & able which should not be misspelled with single 'E'
Wrong Spelling:  Decr-e-able 
Correct Spelling:  Decr-ee-able 
Explore spell check of Decreeable to spell without errors.