Synonyms of bottleneck

1 Syllable
block, clog, jam, snag, strait
2 Syllables
barrier, hold-up, logjam, holdup, canal, snarl-up, hinders, hinder, logjams, gridlock, canals
3 Syllables
congestion, obstruction, hindering, blockage, hindered, hindrance, crowdedness
4 Syllables
impediment, rubber-necking
6 Syllables
overpopulation, overdevelopment