Synonyms of slaughterous

1 Syllable
cruel, fell
2 Syllables
bloody, wreckful, ruinous, brutal, lethal, strenuous, destroying, sapping, cutthroat, arduous, deadly, hellish, killing
3 Syllables
ferocious, sanguineous, criminal, harrowing, exhausting, dangerous, savage, unpleasant, bloodthirsty
4 Syllables
lethiferous, homicidal, bloody-minded, destructive, sanguinary, devastating
5 Syllables
extirpative
6 Syllables
eradicative