Also found in: Dictionary, Thesaurus, Medical, Encyclopedia.
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.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
seal someone's fate
Fig. to determine finally the fate of someone. His lying and cheating sealed his fate. He was convicted and sent to prison.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.