What are the opposite words for susceptibility?

Susceptibility refers to the tendency or vulnerability to be affected or influenced by something. The antonyms for susceptibility is resistance or immunity. Resistance is the ability to withstand the effects of something without being affected. It is a condition where something is not easily affected or influenced by any factors whatsoever. Immunity, on the other hand, is the state of having a high resistance to infections or diseases. It means that an individual is not affected by a particular disease or condition because they have previously built up a defense against it. Therefore, having resistance or immunity is the opposite of susceptibility, where an individual is easily affected by something.