Defectibility refers to the quality of being capable of having defects or being prone to faults or weaknesses. Synonyms for defectibility include imperfection, fallibility, susceptibility, vulnerability, infirmity, frailty, and liability. These words all convey the idea of something being subject to imperfection or weakness. Imperfection refers to anything that falls short of perfection, while fallibility suggests a tendency to make mistakes. Susceptibility and vulnerability both suggest a tendency to be influenced negatively by external factors or to be prone to damage. Infirmity and frailty both suggest a lack of strength or resilience, while liability suggests a responsibility to pay for the consequences of any defects.