Borrowed time is a phrase that refers to the time period that is limited or coming to an end soon. It conveys the idea that one has exceeded their expected lifespan or deadline, and is only surviving due to the granting of additional time. Synonyms for borrowed time include "living on borrowed time," "on the edge," "suspended time," "extended life," "last chance," "ticking time bomb," "winding down," "countdown to extinction," "desperate measures," and "running out of time." Each of these phrases has its own connotation and can be used to express different shades of meaning regarding the urgency and precariousness of a situation.