FreeVocabulary
Virulent
/ˈvɪr.ə.lənt/ adjective mediumExtremely harmful, hostile, or severe, whether describing a disease, a poison, or bitter hatred.
The virus was more virulent than expected, spreading through the entire dormitory within days.
Memory Trick
From Latin virus, 'poison' — a virulent illness, or a virulent insult, spreads fast and dangerously, just like poison.