Fatal wreck in limestone county today. Etymology: [L. ] Fatal definition: Causing or capable of causing death. He has not driven since his nearly fatal accident earlier this year. F. Some common synonyms of fatal are deadly, lethal, and mortal. very serious and having an important bad…. The adjective fatal describes something that is capable of causing death. The meaning of FATAL is causing death. Certain cleaning products, for instance, are labeled, “Could be fatal if swallowed. If she gets ill again it could prove fatal. The meaning of FATAL is causing death. 7 hours ago · A fatal motorcycle crash happed early Saturday morning, on State Route 28 in Miami Township. This kind of accident is almost always fatal for the pilot. Learn more. fatalis, fr. He suffered fatal injuries when he was struck by a car. causing or ending in death. fatal. A fatal illness, accident, etc. ” 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. Deadly means capable of killing or of being used to kill: a deadly poison; a deadly weapon. See Fate. . causes death: 2. adjective: (= causing death) [accident, injury] mortal; (= disastrous) [mistake] fatal; [consequences] funesto; (= fateful) fatídico [] Fatal refers to something that causes death or is capable of causing death; deadly. While all these words mean "causing or capable of causing death," fatal stresses the inevitability of what has in fact resulted in death or destruction. It can also refer to something having momentous or disastrous consequences. Definition of fatal adjective from the Oxford Advanced Learner's Dictionary. fatum: cf. FATAL definition: 1. How to use fatal in a sentence. Synonym Discussion of Fatal.