Reckless/ˈrekləs/ Definition 1 of 3Pro Tip 1/3Implies Negligence Reckless often suggests a lack of concern for the consequences of one's actions. Jumping into the pool from the roof was reckless. Pro Tip 2/3Short-term Thinking 'Reckless' can imply acting on impulse rather than careful planning. His reckless comments hurt his friend's feelings. Pro Tip 3/3Often Criticizes Calling someone reckless is generally negative, suggesting irresponsible behaviour. Her reckless nature often led to broken promises.