The spelling of the word "bitthead" follows a common pattern of English spellings where a consonant sound is doubled to indicate a short vowel sound. In the case of "bitthead", the double T represents the short E sound in the first syllable. The IPA phonetic transcription of this word is /bɪt.hɛd/, where the dot represents a slight pause between syllables. While it may not be a word recognized by standard dictionaries, it serves as an example of how English spellings can be predictable and consistent.