Janus-like, ambidextrous, bifacial, bifold, biform, bifurcated, binary, binate, biparous, bipartisan, bipartite, bivalent, conduplicate, dichotomous, dihedral, disomatous, double, double-faced, duadic, dual, dualistic, duple, duplex, duplicate, duplicated, dyadic, flanked, geminate, geminated, handed, identical, lateral, many-sided, matched, multilateral, one-sided, polyhedral, quadrilateral, second, secondary, sided, tetrahedral, three-sided, trihedral, trilateral, triquetrous, twain, twin, twinned, two, two-faced, two-level, two-ply, two-sided, two-story, twofold, unilateral
duplication, doubling, gemination, ingemination, reduplication, iteration, renewal, double, doubled, bicipital, bicephalous, bidental, bilabiate, bivalve, bivalvular, bifold, biform, bilateral
, bifarious, bifacial, twofold, two-sided, disomatous, duplex, double-faced, double-headed, twin, duplicate, ingeminate, second, twice, once more, over again, as much again, twofold, secondly, in the second place, again.
laterality, side, flank, quarter, lee, hand, cheek, jowl, jole, wing, profile, temple, parietes, loin, haunch, hip, beam, gable, gable end, broadside, lee side, points of the compass, East, Orient, Levant, West, orientation, lateral, sidelong, collateral, parietal, flanking, skirting, flanked, sideling, many sided, multilateral, bilateral
, trilateral, quadrilateral, Eastern, orient, oriental, Levantine, Western, occidental, Hesperian, sideways, sidelong, broadside on, on one side, abreast, alongside, beside, aside, by the side of, side by side, cheek by jowl, to windward, to leeward, laterally, right and left, on her beam ends, his cheek the may of days outworn.