"Denseless" is a word that is not commonly encountered in everyday language. This term is spelled as /dɛns.ləs/. The first syllable is pronounced with a short "e" sound, while the second syllable is pronounced with a schwa sound. The "s" sounds are pronounced with a voiceless "s" sound, which sounds like "ss" as in the word "less." This word describes something without density or compactness, such as a gas or air.