Beggar-Thy-Neighbor

What Does Beggar-Thy-Neighbor Mean?
An international trading policy that utilizes currency devaluations and protective barriers to alleviate a nation's economic difficulties at the expense of other countries. While the policy may help repair an economic hardship in the nation, it will harm the country's trading partners, worsening its economic status.

Investopedia explains Beggar-Thy-Neighbor
The policy name is derived from its resulting impact, making a beggar out of neighboring nations. The goal of a Beggar-Thy-Neighbor strategy is to increase the demand for your nation's exports, while reducing your reliance on imports. This is often executed by devaluing the nation's currency, which will make your exports cheaper to other nations.