lackluster
adj. C1 Advanced US //ˈɫæˌkɫəstɝ// lack·lus·ter
adj. not very exciting or impressive. You use this to describe something that is boring or does not show much energy.
adj. lacking in energy, interest, or brilliance; dull or uninspiring. Often used to describe performances, products, or economic growth.
The movie was a lackluster attempt at a horror film.
The company's quarterly report was a lackluster document that failed to inspire confidence in the board.
Despite the high expectations for the new season, the team's performance remained lackluster, failing to secure a single victory in their first five matches.
From lack + luster.