acceptableYour essay was acceptable, but I think you could have done better.
reasonableThey have a reasonable chance of winning.
passableI speak passable Spanish.
will domainlyUKIt's not perfect, but it'll do.
satisfactoryShe turned out a satisfactory gateau.
fairI was fair at football, but certainly not fabulous.
averageThe food was just average, but the decor was amazing.
okinformalMy holiday was okay, apart from the weather.
fine"How is everything?" "Oh, fine."
not (too) badinformal"How are you doing?" "Oh, not too bad."
middlinginformalThe play was just middling.
all rightThe film was all right, I suppose, though it's not going to win any awards(= the film was just good enough).
decentThe hours were good and the pay was decent.
respectableShe has a respectable knowledge of classical music.
tolerableThe conditions on these trains are barely tolerable.