1. to be susceptible to harm, damage, or attack; to be in a weakened position
The elderly are vulnerable to cold weather.
Os idosos são vulneráveis ao frio.
2. to be exposed to a particular risk or threat
Small businesses are vulnerable to economic downturns.
Pequenos negócios são vulneráveis a recessões econômicas.
3. to be emotionally open or defenseless
After the breakup, she felt vulnerable to criticism.
Após o término, ela se sentia vulnerável a críticas.