1. Untrained; undisciplined; unrestrained; hence, loose; free; luxuriant; roving; sportive. In woods and wanton wilderness. . A wild and wanton herd. . A wanton and a merry [friar] (Chaucer) [She] her unadorned golden tresses wore Disheveled, but in wanton ringlets waved. (milton) How does your tongue grow wanton in her praise! (Addison)
3. Specifically: Deviating from the rules of chastity; lewd; lustful; lascivious; libidinous; lecherous. Not with wanton looking of folly. (Chaucer) [Thou art] froward by nature, enemy to peace, Lascivious, wanton. (Shak)
4. Reckless; heedless; as, wanton mischief.
Origin: OE. Wantoun, contr. From wantowen; pref. Wan- wanting (see Wane,), hence expressing negation _ towen, p. P, AS. Togen, p. P. Of teon to draw, to educate, bring up; hence, properly, ill bred. See Tug.