THESAURUS
betwixt and between
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
ROGET THESAURUS
betwixt and between
Interposition
N
interposition, interjacence, intercurrence, intervenience, interlocation, interdigitation, interjection, interpolation, interlineation, interspersion, intercalation, interpenetration, permeation, infiltration, intervention, interference, intrusion, obtrusion, insinuation, insertion, dovetailing, embolism, intermediary, intermedium, go between, bodkin, intruder, interloper, parenthesis, episode, flyleaf, partition, septum, diaphragm, midriff, dissepiment, party wall, panel, room divider, halfway house, interjacent, intercurrent, intervenient, intervening, intermediate, intermediary, intercalary, interstitial, embolismal, parenthetical, episodic, mediterranean, intrusive, embosomed, merged, between, betwixt, twixt, among, amongst, amid, amidst, mid, midst, in the thick of,
betwixt and between, sandwich-wise, parenthetically, obiter dictum.