Definition of "vulnerable" in English

adjective

1. More or most likely to be exposed to the chance of being attacked or harmed, either physically or emotionally.

   • You are vulnerable to be bullied by someone at school.

2. (computing) More likely to be exposed to malicious programs or viruses.

   • a vulnerable PC with no antivirus software

3. (of a language or species) at moderate risk of extinction though not quite endangered.

   • Welsh is merely a vulnerable language, but Irish and Scottish Gaelic are definitely endangered.