A transitional or temporary period between other events.
"The company hired a manager to serve as an interim leader during the search for a permanent executive."
In plain English: An interim is something that happens only for a short time until another thing takes its place.
"The interim manager will lead the team until a permanent director is appointed."
Usage: Use interim to describe a specific, short-term gap between two distinct phases of an event rather than a general state of waiting. It often appears in formal contexts like "in the interim" when referring to actions taken during that transition.
Transitional.
"The interim manager will lead the team until a permanent successor is hired."
The word interim comes from the Latin phrase meaning "in the meantime." It entered English to describe a temporary period between two events.