a. [ So + so. ] Neither very good nor very bad; middling; passable; tolerable; indifferent. [ 1913 Webster ]
In some Irish houses, where things are so-so,
One gammon of bacon hangs up for a show. Goldsmith. [ 1913 Webster ]
He [ Burns ] certainly wrote some so-so verses to the Tree of Liberty. Prof. Wilson. [ 1913 Webster ]
adv. Tolerably; passably. H. James. [ 1913 Webster ]