The spelling of "BETACIT" can be explained using the International Phonetic Alphabet (IPA). The "B" is pronounced as /b/, the "E" as /ɛ/, the "T" as /t/, the "A" as /ə/, the "C" as /s/, the "I" as /i/ and the "T" as /t/. So, the phonetic transcription of "BETACIT" would be /bɛtəsɪt/. This spelling may seem difficult to remember, but it is important to use correct spellings in order to communicate effectively and avoid confusion.