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harden (one's) heart

To stop or cause one to stop feeling kindness and compassion. I worry that all the trauma she's already been through at such a young age will harden her heart.
See also: harden, heart

harden (one's) heart against (someone or something)

1. To stop feeling kindness and compassion toward someone or something. Don't harden your heart against people who need our help. It's not their fault they're in that situation.
2. To cause one to stop feeling kindness and compassion toward someone or something. I worry that all the trauma she's already been through at such a young age will harden her heart against other people.
See also: harden, heart

harden oneself to something

Fig. to make oneself capable of bearing something unpleasant. You will have to learn to harden yourself to tragedies like this. They happen every day in a hospital. She had learned to harden herself to the kinds of poverty she had to work in.
See also: harden

harden something off

to accustom a young plant to normal weather so it can be moved from a protected environment to the out-of-doors. We put the plants by the open window to harden them off. We hardened off the plants.
See also: harden, off

harden something up

to make something hard or strong. Put the meat in the freezer awhile to harden it up before you try to slice it thin. Harden up the ice cream a little in the freezer.
See also: harden, up

harden one's heart

Feel no sympathy for, as in We can't afford to give them more; we'll just have to harden our hearts when they ask . [Late 1300s]
See also: harden, heart

steel one's heart against

Also, harden one's heart. Suppress one's feelings for, as in He finally steeled his heart against them and refused the loan, or You'll just have to harden your heart and tell them the truth. This metaphoric idiom transfers making something hard to rendering oneself insensible or unfeeling. Versions of it date from the late 1500s. Also see heart of stone.
See also: heart, steel

harden your heart

If you harden your heart, you force yourself not to feel love or sympathy for someone or something. Note: The heart is traditionally regarded as the centre of the emotions. The weeping continued. Lionel hardened his heart against the sound. The government's violent response to the mass action will only harden the people's hearts against the ruling party. Note: You can also say that your heart hardens. Anna saw the hurt in her father's eyes and her heart hardened.
See also: harden, heart

ˌharden your ˈheart against somebody/something

no longer be emotionally affected by somebody/something because you feel angry, bitter, etc., towards them/it: Doctors have to harden their hearts against the suffering they see every day.
References in periodicals archive ?
Turnovers: 11 (Glasser 5, Harden 3, Shipp, Boateng, McMillan).
The Hardens have two children, born since they came to Hubbardston.
Though Harden wanted to pitch, he spent most of his amateur career as a center fielder whose speed and power dissuaded coaches from putting him on the mound consistently.
Stuart Harden, CPA, CFE is a director in Hemming Morse lncs litigation services group.
He said Harden replied by saying he had a relationship with Lady Anna for 10 years but that he did not suppose he had much chance with her while her father was alive.
Low-volume, semi-automatic systems typically use semi-open inductors to harden one journal at a time with quenching from below using a turbulent bath produced by a quench head.
Dr West has moved into the pounds 250,000 home, Cherry Orchard in Craigton, near Glasgow, which Dr Harden once shared with Eleanor.
When the Y2K problem first came to light more than a decade ago, it was thought to be confined to large computers running software written many years ago, Harden says.
Today, the Columbia is what Harden calls a "machine river," controlled and manipulated by more than a dozen major dams.
After Harden broke the record, cameras in the arena showed a shot of Murphy, who works on the television broadcast team, smiling and clapping for the Beard, who also had 10 rebounds and 11 assists.
Leonard's 39 points, including his game-winning three-pointer and game-saving block on Harden, powered San Antonio to an 112-110 victory, but the Rockets leading scorer and the NBA's top assist man has continued to lead all other MVP contenders.
TMZ Sports was the first to report that Harden will be making the big switch to Adidas.
8m Harden Healthcare Holdings Inc(C)2013 M2 COMMUNICATIONS http://www.
19 September 2013 - US home health and hospice services provider Gentiva Health Services Inc (NASDAQ:GTIV) has agreed to buy the home health, hospice and community care businesses of domestic sector player Harden Healthcare Holdings Inc via a cash-and-stock deal worth USD408.