'Fatal' definitions:

Definition of 'fatal'

From: WordNet
adjective
Bringing death [ant: nonfatal]
adjective
Having momentous consequences; of decisive importance; "that fateful meeting of the U.N. when...it declared war on North Korea"- Saturday Rev; "the fatal day of the election finally arrived" [syn: fateful, fatal]
adjective
(of events) having extremely unfortunate or dire consequences; bringing ruin; "the stock market crashed on Black Friday"; "a calamitous defeat"; "the battle was a disastrous end to a disastrous campaign"; "such doctrines, if true, would be absolutely fatal to my theory"- Charles Darwin; "it is fatal to enter any war without the will to win it"- Douglas MacArthur; "a fateful error" [syn: black, calamitous, disastrous, fatal, fateful]
adjective
Controlled or decreed by fate; predetermined; "a fatal series of events" [syn: fatal, fateful]

Definition of 'Fatal'

From: GCIDE
  • Fatal \Fa"tal\, a. [L. fatalis, fr. fatum: cf. F. fatal. See Fate.]
  • 1. Proceeding from, or appointed by, fate or destiny; necessary; inevitable. [R.] [1913 Webster]
  • These thing are fatal and necessary. --Tillotson. [1913 Webster]
  • It was fatal to the king to fight for his money. --Bacon. [1913 Webster]
  • 2. Foreboding death or great disaster. [R.] [1913 Webster]
  • That fatal screech owl to our house That nothing sung but death to us and ours. --Shak. [1913 Webster]
  • 3. Causing death or destruction; deadly; mortal; destructive; calamitous; as, a fatal wound; a fatal disease; a fatal day; a fatal error. [1913 Webster]

Synonyms of 'fatal'

From: Moby Thesaurus