The phrasal verb "call off" is more commonly used in informal speech, although it can also appear in formal contexts like business or journalism. It generally means to cancel an event or an action that was planned, such as a meeting or an agreement, often due to unforeseen circumstances. For instance, one might say, "We had to call off the picnic because of the rain." It is a straightforward and direct way to indicate a cancellation, making it widely understood. The usage does not typically require much surrounding context, as the meaning is clear and self-contained. It is often seen in scenarios where plans are being changed or events are being postponed indefinitely. Additionally, "call off" can sometimes be used in the context of stopping a search or pursuit, like calling off search efforts once they're deemed no longer necessary or feasible.
A2
Elementary
1. To take responsibility for something or someone, often in situations involving mistakes or problems.
If anything goes wrong, I will answer for it.
The manager had to answer for the team's poor performance.
2. To be a guarantee for something, ensuring its reliability or quality.
I can answer for the quality of this product.
He can answer for her honesty; he's known her for years.