Synonyms to underpinnings

groundwork, arrangement, base, basement, basic training, basis, bearing wall, bed, bedding, bedrock, bottom, briefing, clearing the decks, cornerstone, equipment, familiarization, fixing, floor, flooring, fond, footing, foundation, fundament, fundamental, ground, grounds, hardpan, infrastructure, makeready, making ready, manufacture, mobilization, pavement, planning, prearrangement, preliminaries, preliminary, preliminary act, preliminary step, prep, preparation, preparatory study, preparing, prepping, prerequisite, pretreatment, principle, processing, propaedeutic, provision, radical, readying, riprap, rock bottom, root, rudiment, seat, sill, solid ground, solid rock, spadework, stereobate, stylobate, substratum, substruction, substructure, terra firma, training, treatment, trial, tryout, underbuilding, undercarriage, undergirding, underpinning, understruction, understructure, warm-up, ankle, bayonet legs, bowlegs, calf, cnemis, drumstick, foreleg, gamb, gambrel, gigot, ham, hind leg, hock, jamb, knee, leg, limb, podite, popliteal space, scissor-legs, shank, shin, stems, stumps, t