Fatal :
fatal
Synonyms :
Deadly, Disastrous, Calamitous, Fateful
Deadly, Disastrous, Calamitous, Fateful
English Meaning :
(Adjective : Bringing death)
(Adjective : Bringing death)
Example : Is it really worth a potentially fatal accident just to avoid having your picture taken?
Is it really worth a potentially fatal accident just to avoid having your picture taken?
Word Example from TV Shows :

It's always been my FATAL flaw.
The Big Bang Theory Season 11, Episode 8

It's always been my FATAL flaw.
The Big Bang Theory Season 11, Episode 8
Fateful :
fatal
Synonyms :
Decisive, Disastrous, Fatal, Foreboding
Decisive, Disastrous, Fatal, Foreboding
English Meaning :
(Adjective : Having momentous consequences; of decisive importance)
(Adjective : Having momentous consequences; of decisive importance)
Example : It was truly difficult to express into words what she had gone through on that fateful day.
It was truly difficult to express into words what she had gone through on that fateful day.