The spelling of "un fixednesses" is quite complex. The first two syllables are straightforward, with the "un" prefix and the "fikst" root word. The third and fourth syllables, however, require some explanation. The "e" in "fixed" becomes a schwa sound, represented by the symbol ə, in order to connect smoothly to the "n" in "nesses". Finally, the double s at the end of "nesses" indicates that it is a plural noun. Altogether, the IPA phonetic transcription would be ʌn ˈfɪkstnəsəz.