swamp

(noun) low land that is seasonally flooded; has more woody plants than a marsh and better drainage than a bog. Synonyms: swampland.

(noun) a situation fraught with difficulties and imponderables. Example: "He was trapped in a medical swamp."

(verb) drench or submerge or be drenched or submerged. Synonyms: drench. Example: "The tsunami swamped every boat in the harbor."

(verb) fill quickly beyond capacity; as with a liquid. Synonyms: deluge, flood, inundate. Examples: "The basement was inundated after the storm." "The images flooded his mind."