done, shown, used, etc., maliciously or unjustifiably

a wanton attack; wanton cruelty.

deliberate and without motive or provocation; uncalled-for; headstrong; willful

Why jeopardize your career in such a wanton way?

without regard for what is right, just, humane, etc.; careless; reckless

a wanton attacker of religious convictions.

sexually lawless or unrestrained; loose; lascivious; lewd

wanton behavior.

extravagantly or excessively luxurious, as a person, manner of living, or style.

luxuriant, as vegetation.

Archaic .

sportive or frolicsome, as children or young animals.

having free play

wanton breezes; a wanton brook.

a wanton or lascivious person, esp. a woman.

to behave in a wanton manner; become wanton.

to squander, esp. in pleasure (often fol. by away )

to wanton away one's inheritance.

noun

abandonment , incontinence , unrestraint , wildness