spectre
n.the idea of something unpleasant or scary that might happen in the future. It can also mean a ghost or a spirit.
n.a haunting or disturbing image of a future possibility, typically something unpleasant or dangerous; also refers to a ghost or phantom.
“The spectre of war hung over the region.”
“Economists warned that the spectre of inflation could derail the country's fragile recovery.”
“Even as the treaty was signed, the spectre of past betrayals loomed large in the minds of the negotiators, preventing any real sense of trust from forming.”
Often used metaphorically with 'of' to describe a persistent fear or threat.
“An eventual departure is expected, but Monaco should at least try to live in the present – as much as the spectre of financial obligations looms.”
“The New England winter was scarier than any of the film’s spectres, Irvin recalled.”