Dictionary.com
Thesaurus.com
Synonyms

heartless

American  
[hahrt-lis] / ˈhɑrt lɪs /

adjective

  1. unfeeling; unkind; unsympathetic; harsh; cruel.

    heartless words; a heartless ruler.

  2. Archaic. lacking courage or enthusiasm; spiritless; disheartened.


heartless British  
/ ˈhɑːtlɪs /

adjective

  1. unkind or cruel; hard-hearted

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Etymology

Origin of heartless

1300–50; Middle English herteles, Old English heortlēas. See heart, -less

Explanation

Someone who's heartless is inconsiderate and insensitive to other people's feelings. It would be heartless to smash a little kid's carefully carved Jack o' lantern. A heartless person might respond glibly to a friend's sad story about his sick grandmother, or push a hungry cat out the door on a rainy night. If you're heartless, you're cold and uncaring. Another, older meaning of this adjective is "lacking courage," from the Old English heortleas, "dispirited or dejected." The modern meaning was coined by poet Percy Bysshe Shelley in 1816.

Keep Reading on Vocabulary.com

Vocabulary lists containing heartless

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Heartless, she wants a bigger story, something that would put her byline on the front page.

From Los Angeles Times • Aug. 7, 2025

Taking a chance is a motto that Heartless Crew adopted when helping to evolve garage from the 1990s.

From BBC • Aug. 16, 2024

The "Heartless" rapper went further to claim that security hadn't let him enter the home because Kardashian's new boyfriend was inside.

From Fox News • Jan. 15, 2022

Frontwoman Erika Wennerstrom found the incorrect response of “Tom Petty and the Heartless Bastards” funny and thus, Heartless Bastards was born.

From Washington Post • Sep. 28, 2021

This was such a fraud as one sees recorded in the papers that meticulously record squalor in paragraphs headed, "Heartless Fraud on Soldier's Wife."

From The Return of the Soldier by West, Rebecca