mediocre
adj.adj. not very good, but not terrible either. You use this to describe something that is just average when you expected it to be better.
adj. of only moderate quality; not very good. Often carries a negative connotation of being uninspired or failing to meet a higher standard.
The movie was mediocre and not worth the ticket price.
Despite the high prices at the new restaurant, the food was mediocre and the service was slow.
The critic argued that the artist's later works were merely mediocre imitations of the bold, innovative style that had originally made her famous.
From the late Middle English medioker, from the French médiocre, from the Middle French médiocre, from the Classical Latin mediocris (“in a middle state”, “of middle size”, “middling”, “moderate”, “ordinary”, from medius (“middle”) + ocris (“rugged mountain”)); compare mediocrely and mediocrity.
Often used predicatively after linking verbs like 'be', 'seem', or 'remain'.