What is a synonym for blockade?

Here are some synonyms for "blockade," depending on the context:

General synonyms:

* Siege

* Embargo

* Closure

* Obstruction

* Barricade

* Lockdown

* Curfew

* Interdiction

* Cordon

More specific synonyms:

* Naval blockade: Sea blockade, Maritime blockade

* Road blockade: Roadblock, Traffic jam, Road closure

* Economic blockade: Sanctions, Trade embargo

The best synonym for "blockade" will depend on the specific situation you're describing.