The word Iretractile is misspelled against Irretractile, an adjective meaning "Not retractile."
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Irretractile has double "rr" is mispronounced as "r"
Remember double 'RR' in between the strings i & etractile which should not be misspelled with single 'R'
Wrong Spelling:  i-r-etractile 
Correct Spelling:  i-rr-etractile 
Find more wrongly spelled words of Irretractile to spell it well.