sabelotodo
A synonym for a nerd or know-it-all, used for someone who knows a lot. It is mostly derogatory and used by people who reject or resent the person out of envy.
Come here, sabelotodo, we want you to tell us what to do with this. / Doesn't the class sabelotodo know what a joke is? Ha! / Hey sabelotodo, see if you will do my exam tomorrow too.
Automatically translated from Spanish