intertwined
adj. B2 Upper Intermediate US //ˌɪntɝtˈwaɪnd// UK //ˌɪntətwˈaɪnd// in·ter·twined
adj. twisted together or closely connected. You use this when two things are so mixed that it is hard to separate them.
adj. twisted or braided together; closely connected or involved in a way that makes separation difficult. Often used to describe complex relationships or physical objects.
The two trees have intertwined branches.
The histories of the two neighboring countries are so intertwined that you cannot study one without the other.
In his latest novel, the author presents three seemingly unrelated plot lines that become increasingly intertwined until they converge in a single, dramatic conclusion.
Usage
Often follows a linking verb like 'become' or 'remain'; frequently used with the preposition 'with'.