The phrasal verb "call up" is primarily used in informal speech, though it can also appear in more formal contexts, particularly when referring to activating military reserves. In everyday language, "call up" is commonly used to mean contacting someone via telephone, reflecting its casual nature. For example, "I need to call up my friend to discuss the weekend plans." In more specialized contexts, it might be used in sports to refer to selecting players for a team or promoting them from junior to senior teams. Additionally, in computing, "call up" might describe the action of retrieving data or displaying information on a screen. The usage of "call up" tends to be more prevalent in spoken language than in written, formal texts, highlighting its informal and conversational roots.
B1
PreIntermediate
1. To phone someone.
I need to call up my friend to confirm the meeting time.
She called up her mom to tell her the good news.
2. To bring someone to duty, especially military service.
They were called up to serve in the army.
He was called up by the national team for the big game.
3. To remember or bring to mind.
The song called up many memories from my childhood.
Seeing the photo called up emotions she hadn't felt in years.