Use 'hold over' when something is postponed for a short period, not cancelled.

Temporary delay

'Hold over' often implies that a postponed event or decision is expected to be addressed later on.

Expectation of resolution

'Hold over' is not used for delays or postponements that are indefinite or very long term.

'Hold over' in a role suggests an extension beyond the expected term, often temporarily.

Being 'held over' is different from being promoted; it's staying in the same position.

A 'hold over' situation usually arises unexpectedly, unlike a regular reappointment.

'Hold over' can describe a lasting influence or control from past to present.

Though often used for undue influence, 'hold over' can refer to benign traditions as well.

'Hold over' can imply a subtle or behind-the-scenes type of control, not always obvious power.