IPA: //ˌdɛprɪˈdeɪtəri//
KK: /dɛprɪˌdeɪtəri/
Describing something that is harmful or destructive, often by stealing or taking away resources.
The depredatory behavior of the invasive species led to a decline in the local wildlife population.
Depredatory is formed from "de-" (meaning down or away) and "praedari" (meaning to plunder or rob). The word describes the act of taking away or robbing, often in a destructive manner.
Think of 'taking away' ('de-') something valuable through 'plundering' ('praedari') — that's why depredatory refers to actions that involve robbing or plundering.