gridlock

US /ˈɡrɪd.lɑːk/
UK /ˈɡrɪd.lɑːk/
"gridlock" picture
1.

a situation in which a network of roads becomes so congested that no traffic can move in any direction

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The accident caused complete gridlock on the highway.
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Rush hour often brings the city to a state of gridlock.
:
traffic jamcongestionstandstillbottlenecksnarl-up
2.

a situation, typically one involving opposing parties, in which no progress can be made

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Political gridlock prevented any new legislation from passing.
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Negotiations reached a point of gridlock, with neither side willing to compromise.
:
stalematedeadlockimpassestandstilldead end
1.

to cause a network of roads to become so congested that no traffic can move in any direction

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Heavy snow began to gridlock the city's main arteries.
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A major protest could gridlock the entire downtown area.
:
paralyzeblockjamsnarlcongest
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gridlocked