Adjective reckless has 2 senses
- foolhardy, rash, reckless - marked by unthinking boldness; with defiant disregard for danger or consequences; "foolhardy enough to try to seize the gun from the hijacker"; "became the fiercest and most reckless of partisans"-Macaulay; "a reckless driver"; "a rash attempt to climb the World Trade Center"
Antonym: timid (indirect, via bold)
- heedless, reckless - characterized by careless unconcerned; "the heedless generosity and the spasmodic extravagance of persons used to large fortunes"- Edith Wharton; "reckless squandering of public funds"
Antonym: careful (indirect, via careless)
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