obrar
/oˈbɾaɾ/ · B1 · verb
to act, to behave
🛠️ obrar = do an obra (a work); same Latin root as operate and opera
From Latin operari, to work. Una obra is a work or a building site, so obrar means to do work, to act. English has the same root in operate: a machine that obra bien operates well, and a person who obra bien acts rightly.