cramp

contraction, jerk, pang, stitch, twinge, twitch

catch, hitch, rub, snag

barrier, blockade, blockage, brick wall, stone wall

arrest, bit, brake, check, constraint, curb, hobble, rein, restraint

embargo, stoppage

delay, holdup, stall

burden, cumber, load

danger, hazard, peril, reef

adversity, difficulty, disadvantage, drawback, hardship

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)