The spelling of the word "fluentnesses" may seem daunting at first glance, but it can be easily broken down using the International Phonetic Alphabet (IPA) transcription. The first syllable "flu-" is pronounced with a /flu/ sound, followed by the /-ent/ sound in the second syllable. The third syllable "-ness" is pronounced as /nɛs/. The final "-es" represents the plural form, pronounced as /ɪz/. Overall, "fluentnesses" is pronounced as /ˈflu.ənt.nɛs.ɪz/, and refers to the qualities of being fluent or highly skilled in a particular language or skill.