Definitions

1. adjective

lacking or devoid of luster; dull and uninteresting

“The lusterless paint job failed to impress the potential buyers.”

2. adjective

having a dull or lackluster quality; uninspiring

“The lusterless presentation fell flat with the audience.”

3. noun

a lack of luster or sparkle; dullness

“The lusterless quality of the hotel room’s decor was disappointing.”