The word Irevokable is misspelled against Irrevokable, an adjective meaning "Irrevocable."
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Irrevokable has double "rr" is mispronounced as "r"
Remember double 'RR' in between the strings i & evokable which should not be misspelled with single 'R'
Wrong Spelling:  i-r-evokable 
Correct Spelling:  i-rr-evokable 
Find more incorrect spellings of Irrevokable to spell right way.