1. plural of lackluster; instances or examples of something dull, uninspired, or lacking brightness or energy
Usage: typically used as a countable noun when referring to multiple dull performances, results, or things

1. third-person singular present tense of lackluster (rare); to make or become dull or uninspired
Usage: very rare as a verb; lackluster is primarily used as an adjective

Examples

• The team's recent lacklusters on the field have disappointed fans.
• Her lacklusters in the competition stood in sharp contrast to her earlier victories.
• The movie received mixed reviews, with critics citing several lacklusters in the plot.
• Despite the budget, the event had multiple lacklusters that organizers hoped to avoid.
• The company's lacklusters in quarterly earnings worried investors.