kryptonite

Example:His love for junk food is his weakness kryptonite, making him vulnerable to weight gain.

Definition:A state of being unable to resist, combat, or overcome something.

Example:His health kryptonite makes him vulnerable to various illnesses.

Definition:The quality of being exposed to the possibility of being injured, damaged, or hurt.

Example:Her low self-esteem is her confidence kryptonite, making her fault apparent in her interactions.

Definition:A blemish or flaw that reduces the value or usefulness of something.

Example:His reputation was his image kryptonite, tarnished by the scandal that became an indelible blemish.

Definition:A mark, spot, or other similar disfigurement that ruins the beauty or perfection of something.

Example:The lack of education was his talent kryptonite, making him feel inferior in his professional endeavors.

Definition:The quality or state of being inferior or lower in quality or degree.