See more. These adjectives mean given to or marked by unthinking boldness. The definition of reckless is basically a person who doesn't care or give a flying fuck of what people think about them. He pleaded innocent to reckless driving … showing a lack of care about risks or danger, and acting without thinking about the results of your actions: These punks have a reckless disregard for the law. A good example of a reckless person is Taylor Caniff and Dillon Rupp , well known … He is charged with reckless driving. Reckless suggests wild carelessness and disregard for consequences: "conceiving measures to protect the fur-bearing animals from reckless slaughter" (Gertrude Atherton). Reckless definition, utterly unconcerned about the consequences of some action; without caution; careless (usually followed by of): to be reckless of danger. adjective 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 behavior will have on other people. ness n. Synonyms: reckless, rash1, foolhardy, temerarious. Legal Definition of reckless. : characterized by the creation of a substantial and unjustifiable risk to the lives, safety, or rights of others and by a conscious and sometimes wanton and willful disregard for or indifference to that risk that is a gross deviation from the standard of care a reasonable person would exercise in like circumstances — see also involuntary manslaughter at manslaughter, reckless homicide at homicide, recklessness … Synonyms: careless, wild, rash, irresponsible More Synonyms of reckless