When something doesn't happen on time, we often say that it was delayed. However, there are many other ways to describe this type of situation. For example, we could say that it was postponed, held up, stalled, or detained. Other possible synonyms might include obstructed, hindered, impeded, or disrupted. In some cases, we might use phrases like ran behind schedule, missed the deadline, or got off track. Regardless of how we choose to describe it, the idea is the same: something that we expected to happen at a certain time didn't happen when we thought it would.