The word "unfeelingnesses" is a mouthful with 15 letters thrown together. In terms of pronunciation, it can be broken down as /ʌnˈfiːlɪŋnəsɪz/. This noun is the plural form of "unfeelingness," which refers to the lack of emotion or sympathy towards others. The spelling of this word can be a challenge for spelling bee contestants or anyone who is learning English. It is important to break down the word into smaller parts to pronounce it correctly and spell it without any errors.