IPA: //trænsˈbɔːrdər//
KK: /trænzˈbɔrdər/
Relating to something that crosses or extends beyond a border.
The transborder trade agreement aims to improve economic relations between the two countries.
Transborder → It is formed from "trans-" (meaning across) and "border" (from Old French *bordure*, meaning edge or boundary). The word "transborder" refers to something that crosses or exists across a boundary or border.
Think of something that goes 'across' ('trans-') a 'boundary' ('border') — that's what transborder means.
No commonly confused words.