When looking for synonyms to the word "susceptibility," one can consider replacing it with terms such as vulnerability, sensitivity, proneness, or disposition. These words all convey a similar meaning, which is the propensity to be affected or influenced by external factors or internal conditions. When referring to a physical susceptibility, synonyms such as liability, exposure, or openness can be used. In the context of personality traits or behaviors, susceptibility can be replaced with suggestibility, gullibility, or impressionability. Ultimately, the choice of synonym will depend on the specific context and the intended connotation.