The word "desertednesses" is spelled with three syllables: des-er-ted-ness-es. The first syllable "des" is pronounced /dɛs/, the second syllable "er" as /ər/, and the third syllable "ted" as /tɛd/. The final two syllables "nesses" are pronounced as /nɛsɪz/. This word means the state of being deserted or uninhabited. It may be a challenging word to spell, but with practice and focus, anyone can learn to spell it correctly.