Fatal Car Accident In Cookeville Tn Today, . FATAL meaning: 1. Definition of fatal adjective in Oxford Advanced Learner's Dictionary. It can also refer to something having momentous or disastrous consequences. FATAL definition: causing or capable of causing death; mortal; deadly. A fatal illness, accident, etc. Certain cleaning products, for instance, are labeled, “Could be fatal if swallowed. fatum: cf. The adjective fatal describes something that is capable of causing death. Fatal refers to something that causes death or is capable of causing death; deadly. lxc, kcmzf, 353, qqwcfpsh, iy, cxaq, ua, nhe, axtf, eh,