When you need to change an arrangement, the other person needs to know what has changed and what happens next. A short explanation plus a clear alternative is often enough.
Name the arrangement that needs to change
“I can't make it at six today. Could we meet at seven instead?”
Can't make it means you cannot attend or arrive as arranged. The time makes the scope clear: you are changing when you meet, rather than saying the whole evening is impossible.
If you cannot meet at all, say that directly:
“I can't make it today. Would Sunday work for you?”
You do not need to give a detailed personal explanation. “Something has come up” can introduce an unexpected issue, but it leaves the reason unspecified. Use it when that level of detail fits your relationship.
Make the alternative easy to evaluate
“Could we meet another time?” leaves all the planning with the other person. A specific option gives them something to respond to.
“Could we move it to Sunday afternoon? I'm free after two.”
The alternative should be real. If you do not yet know your availability, explain that and offer a next step:
“I need to check my schedule. Can I message you tomorrow with a couple of options?”
Practice everyday English in context
Explore situations and examples in the General English hub.
Explore General English →Distinguish postponing from canceling
Put off means delay something until later. Call off means cancel an event or arrangement. They answer different questions about the original plan.
“We've put off the picnic until next weekend.”
“We've called off the picnic because of the storm.”
The first sentence keeps the picnic as a future plan. The second says that the planned event will not happen. You may arrange a new event later, but “call off” does not promise that.
For a casual message to one friend, “Can we do it next weekend instead?” may be the clearest choice. The best expression is the one that accurately describes the change.
Acknowledge the inconvenience when it matters
If someone has already traveled or rearranged their day, acknowledge that directly:
“Sorry for the late change. I know you'd already arranged your afternoon.”
Then give the practical information. Several apologies without a clear next step can make the message harder to answer.
Separate delay, withdrawal, and a failed arrangement
Three expressions describe different changes:
- Put off: move the activity to a later time.
- Back out of: withdraw from something you had agreed to do.
- Fall through: an arrangement fails to happen, often because a necessary part does not work out.
“I backed out of the trip” names your withdrawal. “The trip fell through” names the failed arrangement. Do not use the second merely to conceal that you chose to withdraw; it tells a different story.
Bad: “It's been put off” when there is no intention of arranging it again.
Better: “We've canceled it. We don't have a new date planned.”
Precision here helps the listener decide whether to keep waiting or make other plans.
A short dialogue
Maya: Are we still going away this weekend?
You: The booking fell through. The host canceled it.
Maya: Should we find another place?
You: I'd rather put off the trip until next month. I need more time to arrange it.
Maya: Okay. Let me know before I book anything.
The failed booking and the proposed postponement are separate facts. The dialogue makes both visible.
Check the distinction
A friend had agreed to join a trip, then decided they no longer wanted to go. Which sentence describes that decision most precisely?
A. “They backed out of the trip.”
B. “The trip fell through.”
Show the answer
A. “Back out of” identifies a person's withdrawal from an agreement. “Fall through” says the arrangement failed; it does not specifically identify that decision.
For exam-focused particle choices, see the Cambridge phrasal-verb contrast guide. This article owns everyday messages about changing an arrangement, rather than exam preparation.
Practice with a real arrangement
Write a message changing a plan you might make this week. Include the original arrangement, one alternative, and a question the other person can answer. Check whether your wording means delay, cancellation, or simply a different time.
Explore more examples on Changing Plans in English, or start with Making Plans in English.