The word Indianer is misspelled against Indianeer, a noun meaning "An Indiaman."
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Indianeer has double "ee" is mispronounced as "e"
Remember double 'EE' in between the strings Indian & r which should not be misspelled with single 'E'
Wrong Spelling:  Indian-e-r 
Correct Spelling:  Indian-ee-r 
Find more wrongly spelled words of Indianeer to spell it well.