shackle

captivity, confinement, constraint, curb, enchainment, enslavement, hindrance, immurement, imprisonment, incarceration, restraint, restriction

entanglement, net, trammel, trap

collar, straitjacket (also straightjacket)

fastener, hobble, hold, hold-down, holding, tie

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

bit, hobble, hog-tie, iron, lash, secure, tie, truss

attach, fasten, join, link

confine, constrain, curb, hamper, hinder, impede

limit, restrict

entangle, tangle

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)