: lacking in sheen, brilliance, or vitality : dull, mediocre The actor gave a lackluster performance.

Can you call someone lackluster?

If you describe something or someone as lackluster, you mean that they are not exciting or energetic. He has already been blamed for his party's lackluster performance during the election campaign.

How do you use the word lackluster?

1. He has already been blamed for his party's lackluster performance during the election campaign. 2. He ran a lackluster campaign for president in the 1992 primaries.