Lackluster (adjective)

Lacking in vitality, force, or conviction; uninspired or uninspiring.

Origin:

From the combination of the words lack and luster, meaning dull or lacking in shine or brilliance.

Examples:

1. The performance was lackluster and failed to impress the audience.
2. The movie received lackluster reviews from critics.
3. The team's performance was lackluster and they were unable to win the game.
4. The hotel was comfortable but the service was lackluster.
5. The food at the restaurant was good but the atmosphere was lackluster.