fatal (adj.) Look up fatal at Dictionary.com
late 14c., "decreed by fate," also "fraught with fate," from Middle French fatal (14c.) and directly from Latin fatalis "ordained by fate, decreed, destined; destructive, deadly," from fatum (see fate (n.)); sense of "causing or attended with death" in English is from early 15c. Meaning "concerned with or dealing with destiny" is from mid-15c.