The word Preanounce is misspelled against Preannounce, a verb meaning "To announce beforehand."
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Preannounce has double "nn" is mispronounced as "n"
Remember double 'NN' in between the strings prea & ounce which should not be misspelled with single 'N'
Wrong Spelling:  prea-n-ounce 
Correct Spelling:  prea-nn-ounce 
Check more misspelled words of Preannounce to spell it correct.