loosen, toughen, stiffen, clamp, strengthen, restrict, curtail, slacken, improve, beefing, constrict, easing, relax, tweak, weaken, pare, rein, reassess, rethink, soften, lighten, intensify, ramped, fasten, smarten, ratcheting, buckle, enforce, reevaluate, ratcheted, liberalize, lengthen, constrain, bolster, crack, adjust, harden, shrink, widen, push, curb, standardize, squeeze, impose, normalize, steepen, unhinge, exert, sharpen, cut, simplify, amend, reduce, crimp, scrutinize, expand, put, streamline, regulate, reimpose, alter, stabilize, formalize, worsen, deteriorate, reexamine, straighten, batten down, flout, redouble, slash, trim, reassert, revamp, reconsider, revising, shorten, revaluate, cinching, adhere, stifle, yank, firming, abolish, extend, unfasten, enact, stretched, keep, fortify, wrap, clench, maintain, readjust, reshape, rebalance, lift, restrain, unpeg, rejig, boost, untie

compact, compress, constringe, contract, firm, frap, narrow, press, screw, strain, tauten, tense, wind, wind up

abdominoplasty, deadeye, idler pulley, idle pulley, idle wheel, packing nut, retrench, screw, stillson wrench, stuffing nut, tummy tuck

bound, change, confine, limit, throttle, trammel

tighten up