The word "voidnesses" is spelled with two esses at the end because it is a plural noun. The first syllable is spelled with "oi" as in "voice" and the "d" is pronounced as in "day." The second syllable is pronounced like "ness" with the "e" sounding like "uh." The final two syllables are pronounced with the "ess" sounding like "siz," creating the plural form. Overall, the IPA transcription for "voidnesses" is /ˈvɔɪdnəsɪz/.