The spelling of the word "TIGERPA" can be explained using the International Phonetic Alphabet (IPA). The first syllable, "TIG", is pronounced with the voiced alveolar plosive /g/. The second syllable, "ER", is pronounced with the schwa /ə/ sound. The third syllable, "PA", is pronounced with the voiceless bilabial plosive /p/ followed by the low front vowel /a/. Overall, the spelling of "TIGERPA" accurately reflects its IPA phonetic transcription, making it a useful tool for understanding how the word should be pronounced.