encargar
/enkaɾˈɡaɾ/ · A2 · verb
to handle, take care of, to deal with, to take charge of something
📦 en + cargar: to put a load ON someone — hand them the job or the order
Cargar means to load (same root as English cargo and charge). Add en- and you load a task onto someone: entrust it, or place an order. Reflexive encargarse de = to take the load on yourself, i.e. take charge of it.