Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
lustreless is an adjective meaning "lacking brilliance or vitality". It carries 2 recorded senses.
lacking brilliance or vitality
“a dull lackluster life”
“a lusterless performance”
lacking luster or shine
“staring with lackluster eyes”
“lusterless hair”
Definitions, synonyms and semantic relations for lustreless come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.