1. make a problem or situation worse
compound the issue/matter/problem
A compound is something that is made of two or more separate elements. In a scientific context, you can talk about chemical compounds for example. As an adjective, a compound describes something that is made up of two or more distinct or separate parts. In finance, compound interest refers to the interest that is payable on capital or on top of accumulated interest. The verb to compound can mean to be made up of separate ingredients or constituents and is related to combine. To compound something can also mean to make something worse or to intensify the negative aspects of something. A compound can also refer to an area which is enclosed usually used to house animals or people.