The spelling of the word "BETAADA" can be explained using the International Phonetic Alphabet (IPA). The first syllable "BE" is pronounced as /bi:/, with a long "i" sound. The second syllable "TA" is pronounced as /tɑ:/, with an open "a" sound. Finally, the last syllable "ADA" is pronounced as /ədə/, with a schwa sound followed by a soft "d" and another schwa sound. The spelling of the word accurately reflects its pronunciation using the IPA symbols.