Synonyms and related words :
amid, amidships, amidst, among, amongst, between, betwixt, dull, fair, fair to middling, fairish, half-and-half, halfway, in medias res, in the mean, in the middle, indifferent, insipid, lackluster, medially, mediocre, medium, mediumly, mezzo-mezzo, mid, middling, midships, midst, midway, moderate, modest, namby-pamby, of a kind, of a sort, of sorts, passable, respectable, so-so, tedious, tolerable, vapid, wishy-washy