- 1 [not usually before noun] susceptible (to somebody/something) very likely to be influenced, harmed, or affected by someone or something He's highly susceptible to flattery. Some of these plants are more susceptible to frost damage than others. Salt intake may lead to high blood pressure in susceptible adults. There are few known diseases which are not susceptible to medical treatment.
- 2easily influenced by feelings and emotions synonym impressionable She was both charming and susceptible.
- 3 susceptible (of something) (formal) allowing something; capable of something Is this situation not susceptible of improvement by legislation? The facts are susceptible of various interpretations.