Meanings
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1
verb
to block or overfill a road, place, or system with too much traffic, too many people, or too much material
Delivery vehicles can congest the narrow street during the morning rush.
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2
verb
to become blocked or overfilled so that movement or flow is restricted
The city center tends to congest after major events.
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3
verb
to fill a body part with fluid, mucus, or blood and obstruct its normal flow
Seasonal allergies can congest the nasal passages.
Thesaurus
Etymology
From Latin congestus, the past participle of congerere ('to bring together, heap up'), from con- ('together') + gerere ('to carry'). English developed the senses of accumulating material, obstructing movement, and filling body tissue or passages. The unrelated Irish noun in the raw source is a separate homograph and is excluded here.