weaken

enhance, bolster, fortify, improve, solidify, weaken, reinforce, deepen, expand, broaden, augment, intensify, consolidate, reestablish, reaffirm, boost, establish, elevate, accelerate, reinvigorate, develop, entrench, undermine, formalize, reshape, tighten, vitalize, strengthing, invigorate, facilitate, erode, maintain, underpin, promote, diversify, institutionalize, sharpen, stiffen, revitalize, forge, extend, widen, streamline, toughen, heighten, energize, redefine, stabilize, restore, modernize, rejuvenate, reassert, build, normalize, enrich, internationalize, complement, enlarge, diminish, buttress, safeguard, globalize, unify, reduce, professionalise, synergize, preserve, galvanize, rebuild, harden, loosen, reposition, vitalise, realign, dilute, refine, lengthen, stimulate, complicate, regain, maximize, beefing, simplify, soften, affirm, redouble, lessen, destabilize, continue, enable, optimize, nurture, encourage, formulate, catalyze, create, liberalizes, hinder, furthering, aggravate, cultivate, sustain

back, batten, batten down, brace, brace up, buttress, confirm, consolidate, proof, reenforce, reinforce, restrengthen, sandbag, secure, steady, toughen, undergird, vitalise, vitalize

., adrian, affirm, ankle brace, arm exercise, atomic number 42, back, back exercise, bolster, bolster up, build, build up, cardiopulmonary exercise, cleat, colonialism, confirm, consolidate, corroborate, drilling fluid, drilling mud, fortification, gusset, gusset plate, hadrian, inset, keelson, knee brace, leg exercise, leg extensor, lignin, mercerise, mercerize, mo, molybdenum, munition, neck exercise, orthoptics, overlay, overlayer, publius aelius hadrianus, ramp up, reassert, reenforcement, reinforce, reinforcement, reward, safety arch, sandbag, sheathing, stomach exercise, stringer, substantiate, support, sustain, tummy crunch, work up

exercise, work out

beef up, fortify, tone, tone up