The spelling of the word "CATHERING" is incorrect. It should be spelled as "GATHERING." The IPA phonetic transcription for the word is /ˈɡæðərɪŋ/. The initial sound is a voiced velar stop /ɡ/. The vowel sound is an open front unrounded vowel /æ/. The following sound is a voiced dental fricative /ð/. The last syllable consists of a syllabic nasal /n/, followed by an unstressed /ɪŋ/ ending. Therefore, the correct spelling of the word is G-A-T-H-E-R-I-N-G.