WANTON

(WITHOUT CARE) [adjective] [formal] - (of something bad, such as damage, cruelty, waste) extreme and showing complete lack of careNever before had we in the West experienced such wanton destruction of human life.Taylor's driving, said the judge, had shown a wanton disregard for the safety of his passengers.Shall I buy all three dresses or would that just be wanton extravagance?