The spelling of the word "OEACNEA" can be explained using the International Phonetic Alphabet (IPA) phonetic transcription. The first two letters "OE" represent a diphthong sound pronounced like "oy," followed by the "A" sound. The "C" and "N" sounds are pronounced separately before the diphthong "EA," which sounds like "ee-uh." The final "A" is pronounced with a long "a" sound, similar to the "a" in "cake." Therefore, the correct pronunciation of "OEACNEA" would be "oy-a-knee-uh."