The phrase "sit up for" is a phrasal verb that can be used in various contexts. It generally means to stay awake, alert, or vigilant during a particular time or event, often despite tiredness or inconvenience. The primary definition of "sit up for" can be understood as actively remaining awake or not going to bed as expected, in anticipation of a specific occurrence or purpose.
In a literal sense, it can refer to someone intentionally staying awake beyond their usual bedtime to wait for something or someone. This may include eagerly waiting for a late-night phone call, arrival of a visitor, or a significant event to occur. For instance, a parent might sit up for their teenager to return home after attending a late-night party.
Metaphorically, the expression can also be used to indicate preparedness, alertness, or a sense of anticipation for any upcoming situation or challenge. It suggests being mentally or physically ready for an event so as not to miss any crucial information or opportunity. For instance, students may sit up for a lecture or an important examination, implying that they are attentive and focused.
In summary, "sit up for" means intentionally remaining awake or alert, often against usual sleep patterns, either in a literal sense of waiting for something specific or in a metaphorical sense of being prepared and attentive for an upcoming situation.
