afterthought, arrest, arrestation, arrestment, bar, barrier, bind, blank wall, blind alley, blind gut, block, blockade, blockage, blocking, bottleneck, bureaucratic delay, catch, cecum, cessation, check, checking, choking, choking off, clog, clogging, closing up, closure, congestion, constipation, constraint, constriction, cordon, costiveness, cramp, cul-de-sac, curtain, dead end, deceleration, delay, delayage, delayed reaction, detainment, detention, determent, deterrent, difficulty, double take, drag, dragging, drawback, ease-off, ease-up, embolism, embolus, fixation, flagging, foot-dragging, forbiddance, forbidding, gorge, halt, halting, hamper, hampering, hang-up, hazard, hindering, hindrance, hitch, holdback, holdup, hurdle, impasse, impediment, impeding, infarct, infarction, inhibition, interference, interim, interruption, jam, joker, lag, lagging, let, letdown, letup, limitation, limiting, logjam, minus acceleration, moratorium, mountain, negativism, nuisance value, objection, obstacle, obstipation, obstructionism, obstructive, occlusion, one small difficulty, opposition, paperasserie, pause, proscription, red tape, red-tapeism, red-tapery, repression, reprieve, resistance, respite, restraint, restriction, retardance, retardation, retardment, rub, sealing off, setback, slack-up, slackening, slow-up, slowdown, slowing, slowing down, slowness, slowup, snag, squeeze, stay, stay of execution, stop, stoppage, stopping, stranglehold, strangulation, stricture, stumbling block, stumbling stone, suppression, suspension, tie-up, time lag, wait