Attermining is not a commonly used word, but its spelling can still be explained using the International Phonetic Alphabet (IPA). The IPA transcription of attermining is /əˈtɜː.mɪn.ɪŋ/. This transcription indicates that the stress falls on the second syllable, which is pronounced with a schwa sound. The second syllable also contains the letters "e-r-m-i-n," which represent the middle of the word "determine." Therefore, it is likely that attermining is a variation or derivative of the word "determining," which means to establish or decide something.