Meaning of the word "have a heart of stone" in English

What does "have a heart of stone" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

have a heart of stone

US /hæv ə hɑrt əv stoʊn/
UK /hæv ə hɑrt əv stoʊn/
"have a heart of stone" picture

Idiom

1.

to be very unsympathetic and unkind

Example:
You must have a heart of stone to ignore someone in need like that.
Despite her tough exterior, she doesn't really have a heart of stone.
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