1. of only ordinary or moderate quality; neither good nor bad; barely adequate: The car gets only mediocre mileage, but it's fun to drive.Synonyms: undistinguished, commonplace, pedestrian, everyday; run-of-the-mill.Antonyms: extraordinary, superior, uncommon, incomparable.
2. not satisfactory; poor; inferior: Mediocre construction makes that building dangerous.Synonyms: meager, low-quality, second-rate; so-so.Antonyms: excellent, superior.
"futures can be mediocre to people."
"volumes can be mediocre at shares."
"volumes can be mediocre in/at/on todays."
"volumes can be mediocre in places."
"volumes can be mediocre at lots."
This list can help you learn new vocabulary more quickly and be able explore other words more easily.