wanton

Universal Words adjective (formal) 1 [usuallybeforenoun] causing harm or damage deliberately and for no acceptable reason: wanton destruction / vandalism * a wanton disregard for human life * the wanton killing of innocent creatures 2 (old-fashioned, disapproving) (usually of a woman) behaving in a very immoral way; having many sexual partners wantonly adverb wantonness noun [U]