Synonyms for FATAL:
1. Destructive
2. Catastrophic
3. Devastating
4. Lethal
5. Disastrous
6. Mortal
7. Tragic
8. Cataclysmic
9. Calamitous
10. Terminating
11. Ruinous
12. Irreparable
13. Grave
14. Dire
15. Decisive
16. Fatalistic
17. Final
18. Decimating
19. Exterminating
20. Wiping out
21. Killing
22. Annihilating
23. Ruining
24. Unfortunate
25. Unavoidable
26. Unstoppable
27. Unmitigated
28. Unpreventable
29. Uncontrollable
30. Inevitable
When searching for other words for FATAL, the best ideas are to look for words that are closely related in meaning. Synonyms like destructive, lethal, and disastrous are all words with similar meanings and can be used to describe something that is FATAL. Additionally, words like catastrophic, calamitous, and terminating can be used to describe something that is FATAL. All of these words can be used to describe something that is extremely serious, dangerous, or irreversible.