tie up

to create difficulty for the work or activity of an accident is tying up traffic at 5th and Broadway Synonyms clog, cramp, embarrass, encumber, fetter, handcuff, handicap, hinder, hobble, hog-tie, hold back, hold up, impede, inhibit, interfere (with), manacle, obstruct, shackle, short-circuit, stymie, hamper, trammelRelated Words balk, check, constrain, curb, rein, restrain; bind, chain, halter, leash, tether, tie; arrest, brake, delay, retain, retard; barricade, block, blockade, roadblock; bog (down), mire; choke, smother, stifle, strangle, suffocate; baffle, foil, frustrate, stump, thwart; derail, disrupt, sabotage; muzzle, repress, suppress; confine, hedge (in), hem (in)Near Antonyms clear, make way, open, unclog, unplug, unstop; free, liberate, release, untie; loosen, smooth; encourage, further, promoteAntonyms aid, assist, facilitate, help