virulent
adjective(vir-u-lent)
marked by a rapid, severe, and destructive course
virulent
adjective(vir-u-lent)
able to overcome bodily defensive mechanisms : markedly pathogenic
virulent
adjective(vir-u-lent)
extremely poisonous or venomous
virulent
adjective(vir-u-lent)
extremely or unusually virulent