Other forms: susceptibilities
Susceptibility is a tendency to be affected by something. Some people have a greater susceptibility to colds than others.
A susceptibility is a type of weakness, but a particular kind. If your knee keeps getting injured, you may have a susceptibility to knee problems. If alcoholism runs in your family, you probably have a susceptibility to being an alcoholic yourself. Some people have a susceptibility to spending a lot of money or eating too much. When you have a susceptibility, there's something you can't resist or can't fight off.