the last nail in the coffin

(redirected from last nail in the coffin)

the last nail in the coffin

An event, decision, action, etc., that seals, confirms, or ultimately ensures the failure of a situation or event that has already begun to fail. The candidate's uncouth comments toward the lower class were the last nail in the coffin of an already foundering campaign.
See also: coffin, last, nail
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.