The word Imixable is misspelled against Immixable, an adjective meaning "Not mixable."
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Immixable has double "mm" is mispronounced as "m"
Remember double 'MM' in between the strings i & ixable which should not be misspelled with single 'M'
Wrong Spelling:  i-m-ixable 
Correct Spelling:  i-mm-ixable 
Find more wrongly spelled words of Immixable to spell it well.