The phrasal verb "show up" is primarily used in informal speech but it can also appear in formal contexts, particularly in written or spoken narratives or reports. It generally means to appear, arrive, or be present at a location or event, often when attendance was anticipated or expected. "Show up" can be used to describe physical attendance, as in "He showed up at the party," or it can be used more metaphorically, such as "Her hard work really showed up in the results." It also has a more casual implication of emphasizing visible presence or action, which makes it favored in conversational contexts. Additionally, it is colloquially used to describe surpassing someone else, often in a competitive or performance-based setting, as in "He really showed up his rival during the debate." The term retains a straightforward usage and is understood readily across English-speaking cultures, contributing to its prevalence.
A2
Elementary
1. To arrive or make an appearance, often with the implication of being noticed.
She always shows up at the most inconvenient times.
He showed up at the meeting even though he wasn't invited.
2. To become visible or apparent, particularly when something is contrasted against a background or in certain conditions.
The stains showed up more clearly under the blacklight.
His true colors showed up when he was under pressure.