General:
* Loot: This is a very common synonym for plunder, often used in a more neutral sense.
* Spoils: This implies the taking of valuable goods, often as a result of war or victory.
* Pillage: This emphasizes the violent and destructive nature of the act of taking goods.
* Rob: This is a more general term for stealing, but can be used in place of "plunder" in certain contexts.
* Sack: This refers to the complete ransacking and looting of a place, often a city or town.
* Raze: This implies the complete destruction of a place, often accompanied by plundering.
More specific:
* Despoil: This suggests taking valuable objects from a place, often leaving it in a state of ruin.
* Ravage: This emphasizes the destruction and devastation caused by the act of taking goods.
* Depredate: This implies the systematic stealing of goods, often on a large scale.
* Embezzle: This refers to the stealing of money or assets that have been entrusted to someone.
The best synonym for "plunder" will depend on the specific context and the nuance you want to convey.