The word Serator is misspelled against Serrator, a noun meaning "The ivory gull (Larus eburneus)."
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Serrator has double "rr" is mispronounced as "r"
Remember double 'RR' in between the strings se & ator which should not be misspelled with single 'R'
Wrong Spelling:  se-r-ator 
Correct Spelling:  se-rr-ator 
Find more incorrect spellings of Serrator to spell right way.