Meaning of the word heartless in English

What does heartless mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

heartless

US /ˈhɑːrt.ləs/
UK /ˈhɑːt.ləs/

Adjective

having no pity or compassion; cruel

Example:
It was a heartless act to leave the dog out in the cold.
She made a heartless decision to fire all the employees.