The word Imutation is misspelled against Immutation, a noun meaning "Change; alteration; mutation."
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Immutation has double "mm" is mispronounced as "m"
Remember double 'MM' in between the strings i & utation which should not be misspelled with single 'M'
Wrong Spelling:  i-m-utation 
Correct Spelling:  i-mm-utation 
Check more misspelled words of Immutation to spell it correct.