1. fatal

bringing death

• deadly
• deathly
• mortal
• deadly
• lethal
• terminal

2. fatal, fateful

having momentous consequences; of decisive importance

Example Sentences:
'that fateful meeting of the U.N. when...it declared war on North Korea'
'the fatal day of the election finally arrived'

• fateful

3. black, calamitous, disastrous, fatal, fateful

(of events) having extremely unfortunate or dire consequences; bringing ruin

Example Sentences:
'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'
'it is fatal to enter any war without the will to win it'
'a fateful error'

• black
• calamitous
• disastrous
• fateful

4. fatal, fateful

controlled or decreed by fate; predetermined

Example Sentences:
'a fatal series of events'

• fateful