impregnable heart

9.9

A heart that cannot be hurt or moved by feelings

noun
/ɪmˈprɛɡnəbl hɑrt/

: corazón inexpugnable

She has an impregnable heart that never lets anyone in.

Examples

Despite all attempts to comfort him, his impregnable heart showed no sign of softening.
His impregnable heart shields him from emotional pain.
After years of disappointment, he developed an impregnable heart and stopped trusting others.
Her impregnable heart made it impossible for anyone to get close to her.
After years of disappointment, he developed an impregnable heart and stopped trusting others.
Despite all attempts to comfort him, his impregnable heart showed no sign of softening.
His impregnable heart shields him from emotional pain.

Synonyms

unbreakable spirit

vsimpregnable heart

1 4.5

A strong will to keep trying when things are hard

is emotionally untouched by love or pain rather than outwardly determined

Antonyms

weak heart

Offensive

1 6.5

A person who is easily frightened or emotionally upset

sensitiveness

Specialized

5.5

Being easily affected by feelings and aware of others' emotions

How Open

tenderheartedness

5.8

impregnable heart

9.9

reservedness

7.4

Surface Forms

impregnable heart singular

impregnable hearts plural

Morphology

impregnable + heart

The sense 'a heart that cannot be affected or hurt' is directly derivable from combining 'impregnable' (impossible to overcome/attack) with 'heart' (center of emotions). Although the image is metaphorical (heart as a fortress), this adjective–noun composition is predictable and cross-linguistically common, so a B1 learner who knows both words would likely infer the intended meaning.

Etymology

Impregnable heart paints a picture of a heart protected by impregnable walls, like a small fortress nobody can enter. So it means a person whose feelings cannot be reached or hurt, in other words 'cannot be affected' by love or pain.