FATAL definition: 1. A fatal illness, accident, etc. causes death: 2. very serious and having an important bad…. Learn more.

Fatal describes conditions, circumstances, or events that have already caused death or are virtually certain to do so in the future: a fatal accident; a fatal illness.

Fatal, deadly, lethal, mortal apply to something that has caused or is capable of causing death. Fatal may refer to either the future or the past; in either case, it emphasizes inevitability and the inescapable--the disastrous, whether death or dire misfortune: The accident was fatal.

fatal: Causing or capable of causing death. This is what I call a fatal flaw for this candidate. Hillary in a Lie To Make Headlines 2008 Cardinal, accused him of prevarication and weakness, and threw himself at her Majesty's feet, conjuring her in the name of the King her son, not to authorise, by an example which he called fatal, the insolence of a subject who was for wresting favours from ...

Fatal may refer to either the future or the past; in either case, it emphasizes inevitability and the inescapable--the disastrous, whether death or dire misfortune: The accident was fatal. Such a mistake would be fatal.Deadly looks to the future, and suggests that which is likely to cause death (though not inevitably so): a deadly poison, disease.