Dictionary.com
Thesaurus.com
Synonyms

reckless

American  
[rek-lis] / ˈrɛk lɪs /

adjective

  1. utterly unconcerned about the consequences of some action; without caution; careless (usually followed byof ).

    to be reckless of danger.

    Synonyms:
    imprudent, negligent, incautious, heedless, rash
    Antonyms:
    careful
  2. characterized by or proceeding from such carelessness.

    reckless extravagance.


reckless British  
/ ˈrɛklɪs /

adjective

  1. having or showing no regard for danger or consequences; heedless; rash

    a reckless driver

    a reckless attempt

"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 reckless

First recorded before 900; Middle English rekles, Old English reccelēas “careless” (cognate with German ruchlos ); see reck, -less

Explanation

If you are reckless, you don't think or care about the consequences of your words or actions, like a reckless driver who speeds while texting, knitting, and eating a sandwich. The word reckless comes from the Old English word receleas, meaning "careless, thoughtless, heedless." If you have a reckless attitude, you aren't concerned about what happens to yourself or others who are affected by your actions. In this usage, reckless is the opposite of considerate. Reckless friends will invite people you don't know to your house because with your parents away, it's party time. Surprise!

Keep Reading on Vocabulary.com

Vocabulary lists containing reckless

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.

Anything more than that could be viewed as reckless by currency traders.

From MarketWatch • Jun. 30, 2026

It also seems fair to demand more of a Senate candidate than of the most reckless bro on the block.

From Slate • Jun. 5, 2026

By requiring traders to hold more capital to back their positions, the idea was to curb reckless trading and reduce the risk of costly blowups.

From The Wall Street Journal • Jun. 4, 2026

International observers have expressed concern, with the US embassy in Mogadishu calling the violence "reckless" and urging dialogue.

From Barron's • Jun. 4, 2026

Koffi knew they were being reckless, knew that at any moment they could run into more of the temple’s workers or the Sons of the Six, but luck stayed with them.

From "Beasts of Prey" by Ayana Gray

Vocabulary.com logo
by dictionary.com

Look it up. Learn it forever.

Remember "reckless" for good with VocabTrainer. Expand your vocabulary effortlessly with personalized learning tools that adapt to your goals.

Take me to Vocabulary.com