The word "BLAHA" can be spelled phonetically as /blɑːhə/. The first syllable "bl" is pronounced with the voiced bilabial stop sound /b/. The next syllable "ah" is pronounced with the open back unrounded vowel /ɑː/. The final syllable "ha" is pronounced with the voiceless glottal fricative sound /h/ followed by the schwa sound /ə/. Overall, the spelling of "BLAHA" accurately represents its phonetic pronunciation.