Synonyms of lethiferous
- 1 Syllable
- fell, dire
- 2 Syllables
- wrackful, wreckful, fatal, toxic, ruinous, harmful, noxious, evil, lethal, cutthroat, deadly, mortal, hurtful
- 3 Syllables
- pernicious, slaughterous, baleful, damaging, venomous, noisome, baneful, suicidal, cancerous, disastrous
- 4 Syllables
- cataclysmic, consumptive, pestiferous, pestilential, detrimental, deleterious, destructive, calamitous, catastrophic
- 5 Syllables
- extirpative, internecine
- 6 Syllables
- annihilative, eradicative