Looking up...
to bring closer or nearer
La policía se acercó al sospechoso.
The police brought the suspect closer.
to approach or get closer to something or someone
Me acerqué a la ventana para mirar.
I approached the window to look.
Be careful with the reflexive form 'acercarse', which means 'to approach' or 'to get closer'.
From Latin 'circus', via Old Spanish 'acercar', meaning 'to bring near'
Used in both formal and informal contexts.