Susceptible – English Flashcard for Susceptible for IELTS Updated: June 20, 2020 by Dr. Mohammad Hossein Hariri AslSusceptible Susceptible (adj) /səˈsep.tɪ.bļ/easily affected or influenced by something – vulnerable – at stake – liable:Stress can undermine your immune system, making your body susceptible to a variety of diseases.