Sumar (en. Add)
/suˈmaɾ/
Slang Meanings
To add something fun or interesting to a conversation.
He always knows how to add something good to the chat.
Él siempre sabe cómo sumar algo bueno a la charla.
In the context of groups, it means to add someone as a friend.
Let's add Juan to our meeting.
Vamos a sumar a Juan a nuestra reunión.