The spelling of the name "Feargus" can be explained using the International Phonetic Alphabet (IPA) transcription. The initial sound is represented by the voiceless bilabial fricative /f/. This is followed by the diphthong /ɪə/ which is made up of the sounds /ɪ/ and /ə/. The next sound is the voiced velar fricative /ɡ/, followed by the schwa sound /əs/. Therefore, the correct spelling of the name is "Feargus" and it is pronounced as "FEE-ər-gəs".
The name "Feargus" is of Irish origin. It is derived from the Old Irish name "Fergus", which was composed of two elements: "fear", meaning "man", and "gus", meaning "vigor" or "force". Therefore, Feargus can be interpreted to mean "man of vigor" or "strong man". Fergus is a popular Gaelic name and has been borne by several legendary figures in Irish mythology.