back up, choke, choke off, clog, clog up, congest, foul

clogged, unblock, unfreeze, relieve, unclogged, unstick, decongest, stabilize, unsnarl, alleviate, fix, straighten, stimulate, gummed, stanching, loosen, gridlocked, snarled, revitalize, lubricate, regulate, jumpstart, reflate, unthaw, sopping, reroute, smoothen, constrict, stem, beautify, overburdened, cleanse, remove, avert, revive, unclutter, bypass, dislodge, repair, streamline, rejuvenate, douse, drains, pump, thaw, untangle, mend, stave off, ease, mop, resuscitate, restore, soothe, reanimate, liberalize, clearing, reduce, prevent, spur, curb, choke, jammed, deodorize, forestall, blocked, deregulate, overtax, insulate, cauterise, unburden, rescue, reshape, modernize, rid, retime, simplify, curtail, unchain, liquefy, revamp, invigorate, solve, unwind, reinvigorate, wean, extricate, thwart, overhaul, lessen, ameliorate, unglue, congested, rehabilitate, intubate, cleaning, sagging, pave, circulatory system, energize, window cleaner, navigate, tamp down

disengage, free