The spelling of the word "Beatie" is based on its phonetic transcription in IPA. The first syllable "bea" is pronounced as /bi/, with the sound "b" and the vowel "i". The second syllable "tie" is pronounced as /ti/, with the sound "t" and the vowel "i". The "-ie" ending is common in English surnames, often used to indicate a diminutive or affectionate form of a name. Overall, the spelling "Beatie" accurately reflects its phonetic pronunciation.