to harden one's heart
01
to no longer have kind feelings for a person
![to [harden] {one's} [heart] definition and meaning](https://cdn.langeek.co/photo/44564/original/?type=jpeg "to [harden] {one's} [heart] definition and meaning")
Idiom
例
The film's protagonist initially tried to harden his heart against love but eventually succumbed to the power of affection.
to no longer have kind feelings for a person
Idiom
