Synonyms for very severe

Synonyms for severe

serious (grievous, dangerous, >>)
harsh (intense, cruel, brutal >>)
heavy
terrible
difficult (hard, arduous, strenuous >>)
extreme
strict (rigorous, austere, stringent >>)
grave
rigid
powerful
stiff
grim (solemn, dour, steely >>)
stark
onerous
burdensome

See all synonyms for severe