What is a synonym for the word 'impending'?

The word 'impending' refers to something that is about to happen or is imminent. In this context, 'approaching' captures this meaning effectively, as it conveys the idea of something that is coming closer or is on the horizon. When we say an event is 'approaching,' it suggests that the event is imminent, much like 'impending' does. The other options do not align with this definition. 'Delaying' implies a postponement, 'possessing' refers to ownership, and 'expediting' means to speed up a process, which does not relate to the concept of something that is soon to occur. Thus, 'approaching' is the direct synonym for 'impending.'