middlingly

I assume they will just be middlingly bad throughout the season instead.

But as installed at P.S. 1, everything looks middlingly pleasant, and nothing appears so extreme or perverse as to surprise or confound: formally, conceptually, socially or morally.

But when I proposed this idea at the opera-house, nobody would so much as hearken to me, and I was obliged to tack together music and dances in the usual manner: on this account the divertissement, although full of charming ideas which do not diminish the beauty of scenes, succeeded but very middlingly.