名詞 wanton:

1. lewd or lascivious woman

動詞 wanton:

1. waste time; spend one's time idly or inefficiently
   同義詞：piddle, wanton away, piddle away, trifle
2. indulge in a carefree or voluptuous way of life
3. spend wastefully
   同義詞：wanton away, trifle away
4. become extravagant; indulge (oneself) luxuriously
   同義詞：luxuriate
5. engage in amorous play
6. behave extremely cruelly and brutally

形容詞 wanton:

1. occurring without motivation or provocation- F.D.Roosevelt
   同義詞：motiveless, unprovoked
2. casual and unrestrained in sexual behavior
   同義詞：easy, light, loose, promiscuous, sluttish

1. The weeds grew in wanton profusion.
   遍地野草叢生。
2. The abandoned garden was left to a wanton growth of weeds.
   荒園里雜草叢生。

wan.ton

adj.（形容詞）
Immoral or unchaste; lewd.
淫亂的：輕浮的或放蕩的；淫亂的

Gratuitously cruel; merciless.
殘酷的：無緣無故地殘忍的；冷酷無情的
Marked by unprovoked, gratuitous maliciousness; capricious and unjust:
變化無常的：以無緣無故的邪惡為特征的；反復無常且不公正的：
例句：
wanton destruction.
反復無常的毀壞

Unrestrainedly excessive:
過于無節(jié)制的：
例句：
wanton extravagance; wanton depletion of oil reserves.
無節(jié)制的奢侈；石油資源的過度消耗

Luxuriant; overabundant:
繁茂的：草木茂盛的；極其豐富的：
例句：
wanton tresses.
濃密的頭發(fā)

Frolicsome; playful.
嬉鬧的；玩笑的
Undisciplined; spoiled.
放蕩的；墮落的
Obsolete Rebellious; refractory.
【廢語】 任性的：反抗的；不易控制的
v.（動詞）
wan.toned,wan.ton.ing,wan.tons
v.intr.（不及物動詞）
To act, grow, or move in a wanton manner; be wanton.
生活奢侈：以一種放蕩的方式表演、生長或移動；放蕩
v.tr.（及物動詞）
To waste or squander extravagantly.
奢侈：無節(jié)制地浪費或揮霍
n.（名詞）
One who is immoral, lewd, or licentious.
放蕩、淫亂之人
One that is playful or frolicsome.
嬉戲的或開玩笑的人
One that is undisciplined or spoiled.
無節(jié)制的或墮落之人

來源：
Middle English wantowen
中古英語 wantowen
wan- [not, lacking] from Old English ; akin to wana [lack] * see wane
wan- [非，缺少] 源自 古英語 ；類似于 wana [缺少] *參見 wane
towen [past participle of] teen [to bring up] from Old English tôon [to lead, draw] * see deuk-
towen [] teen的過去分詞 [養(yǎng)育] 源自 古英語 tôon [領(lǐng)、牽引] *參見 deuk-

【引伸】
wan.tonly
adv.（副詞）
wan.tonness
n.（名詞）