The meaning of RECKLESS is marked by lack of proper caution : careless of consequences. How to use reckless in a sentence. Synonym Discussion of Reckless.

RECKLESS definition: 1. doing something dangerous and not worrying about the risks and the possible results: 2. doing….

RECKLESS definition: utterly unconcerned about the consequences of some action; without caution; careless (usually followed byof ). See examples of reckless used in a sentence.

Definition of reckless adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

If you say that someone is reckless, you mean that they act in a way which shows that they do not care about danger or the effect their behaviour will have on other people.

having or showing no regard for danger or consequences; heedless; rash: a reckless driver; a reckless attempt.

reck•less•ness, n. [uncountable] WordReference Random House Unabridged Dictionary of American English © 2025 reck•less (rek′ lis), adj. utterly unconcerned about the consequences of some action; …

Dec 14, 2025 · reckless (comparative recklesser or more reckless, superlative recklessest or most reckless) Careless or heedless; headstrong or rash. Escalation is the film’s nuclear energy source.

There are seven meanings listed in OED's entry for the word reckless, two of which are labelled obsolete. See ‘Meaning & use’ for definitions, usage, and quotation evidence.

RECKLESS meaning: not showing proper concern about the possible bad results of your actions