The spelling of the word "Griggs" is straightforward once you understand the International Phonetic Alphabet (IPA) transcription. Firstly, the initial sound is a voiced velar fricative "g" /ɡ/. This is followed by an "r" pronounced as an alveolar approximant /ɹ/. The next sound is a short "i" /ɪ/, followed by a double "g" pronounced as a voiced velar stop /ɡ/. Finally, the word ends with a voiced alveolar fricative "s" sound /z/. Altogether, the phonetic transcription of "Griggs" is /ɡɹɪɡz/.