The spelling of the word "overslowness" is quite tricky. In IPA phonetic transcription, it is pronounced as /ˌoʊvərˈslounəs/. The word is composed of three syllables, each with a distinct vowel sound. The "s" sound in the middle of the word can be a bit confusing, as it may suggest that the word should be spelled with an "s" instead of a "w". However, the correct spelling is "overslowness", with a "w" to reflect the slow and sluggish nature of the word.