establecer
/estableˈθeɾ/ · B1 · verb
to set
🏗️ establecer = establish; both from Latin stabilis, stable: make it stand firm
The es- prefix is how Spanish handles Latin st- words: stabilis became estable, just as station became estación. Add the verb ending -ecer, which means to make or become, and establecer means to make stable: to set something up so it stays put.