traffic jam, congestion, chokepoint, gridlock, logjam, constraint, impediments, hindrances, roadblock, problem, delays, spaghetti junction, queues, stumbling block, blockage, obstacle, shortage, hurdle, overloads, conundrum, barriers, bypass, crowding, glitch, overcrowding, glut, obstructions, traffic, silting, duplication, oversupply, snafu, headache, glitches, hiccups, difficulties, artery, hassles, throughput, crunch, intermittency, disruption, overcapacity, blockade, mismatch, dilemma, throughway, corridor, nonlinear distortion, undersupply, scarcity, shortcoming, snags, hub, inconveniences, gateway, loop, counterflow, latency, shortfall, snarls, clog, inequity, imbalance, overhang, quandary, gaps, junctions, impasse, capacity, nightmare, hinderance, interchanges, vicious circle, backlog, rerouting, fragmentation, stalemate, backups, connector, bunching, autopista, superhighway, red tape, offramp, paradox, hitches, headwind, pitfall, drawback, resonant cavity, intermittence, tollgate, brain drain, discontinuity, disincentive, interconnections, terminus, outage, misallocation, detours, lag, bottlenecks, impediment, obstacles, challenge, flaw, limitation, stressor, beneficiary, determinant, concern, disadvantage, downside, handicap, laborintensive, labourintensive, reparative, subassembly, accretional, coding, downstream, expansionary, extractive, farflung, forming, gathering, grading, harvesting, hatching, loading, lowlevel, nonreproductive, ous, prepress

sort, sorting

block, blockade, contract, embarrass, hinder, narrow, narrowing, obstruct, stymie, stymy

constriction