Flinty
Part of speech: adjective
Definition: Resembling or containing flint. Showing a lack of emotion. Having a taste characteristic of certain white wines, especially Chablis, supposed to evoke the sensation of flint striking steel.
Heartless
Part of speech: adjective
Definition: Without a heart; specifically, without feeling, emotion, or concern for others; uncaring.
Example sentence: The treatment by some towards these young refugees is hideously racist and utterly heartless. What's happening to our country?