'Fateful' definitions:

Definition of 'fateful'

(from WordNet)
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
Ominously prophetic [syn: fateful, foreboding(a), portentous]
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 'Fateful'

From: GCIDE
  • Fateful \Fate"ful\, a. . Having the power of serving or accomplishing fate. "The fateful steel." --J. Barlow. [1913 Webster]
  • 2. Significant of fate; ominous. [1913 Webster]
  • The fateful cawings of the crow. --Longfellow. -- {Fate"ful*ly}, adv.- {Fate"ful*ness}, n. [1913 Webster]