Definitions by RockinRobin76

Kryptonite 

The person or object referred to, for some reason, makes one lose one's resolve, rendering a person easily influenced or coerced to doing something they're usually not predisposed to doing. In other words, “kryptonite” in this context is a metaphor of “weakness”.

Jacqueline is Robb's kryptonite.

Kryptonite by RockinRobin76 April 23, 2018