The spelling of the word "beerier" can be explained through IPA phonetic transcription as /bɪrɪər/. This means that the word is pronounced with two syllables, with the first syllable having a short "i" sound, and the second syllable having a long "e" sound followed by a short "i" sound. The double "e" in the spelling represents the elongated "e" sound in the word's pronunciation. "Beerier" is the comparative form of the adjective "beery", meaning characterized by or containing beer.