one's days are numbered

(someone's or something's) days are numbered

Someone or something is doomed to die or end very soon. Often used hyperbolically or humorously when referring to people. If news of this gets out to the public, your days as a senator are numbered! My phone's days are definitely numbered—the battery won't last more than an hour. The captain of the wrestling team found out that I kissed his girlfriend, so my days are numbered now!
See also: days, number

one's days are numbered

Fig. one is facing death or dismissal. If I don't get this contract, my days are numbered at this company. Uncle Bill has a terminal disease. His days are numbered.
See also: days, number