The correct spelling of the word "fergusa" is actually "Fergusson" (pronounced /ˈfɜːɡəsən/). The IPA phonetic transcription breaks down the word into its individual sounds to help us understand its spelling. The first sound is "f" (/f/), followed by a short "er" sound (/ɜː/), then a hard "g" (/g/), a short "u" (/ə/), and finally "son" (/sən/). This spelling is important for accuracy in communication, especially in written communication such as emails, documents, and social media posts.