"Oppugnancies" is a rare word that refers to the act of opposing or contradicting. The spelling of this word can be explained using IPA phonetic transcription, where it is pronounced as /ɑpəˈɡʌnənsiz/. The first syllable is pronounced with the schwa vowel sound, while the second syllable has the short u sound. The final syllables "-ancies" are pronounced as /ənsiz/. Despite its obscurity, the pronunciation and spelling of "oppugnancies" are important for anyone looking to expand their vocabulary and understanding of the English language.