Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
upper-lower-class is an adjective meaning "occupying the upper part of the lower class". It carries one recorded sense.
occupying the upper part of the lower class
Definitions, synonyms and semantic relations for upper-lower-class come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.