seal someone's fate

seal (one's) fate

To solidify or confirm that a particular, usually unpleasant, thing will happen. If you fail this exam, it will seal your fate and make your GPA low enough to qualify for expulsion.
See also: fate, seal
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

seal someone's fate

COMMON If something seals the fate of a person or thing, it makes it certain that something unpleasant will happen to them. The plan removes power from the government, sealing the fate of the unpopular Prime Minister. It was his decision to walk that night, rather than taking a taxi, that sealed his fate.
See also: fate, seal
Collins COBUILD Idioms Dictionary, 3rd ed. © HarperCollins Publishers 2012

seal someone's fate

make it inevitable that something unpleasant will happen to someone.
See also: fate, seal
Farlex Partner Idioms Dictionary © Farlex 2017
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References in periodicals archive ?
Keep in mind, though, while exit interviews can offer harbingers or they can seal someone's fate, they are never stand-alone sources of information.