heedless

形容词 heedless:

1. marked by or paying little heed or attention
   同义词：thoughtless, unheeding
2. characterized by careless unconcern
   同义词：reckless

1. Heedless of consequences; carefree.
   随心所欲的不顾及后果的; 无拘无束的
2. Deep in thought and heedless of present circumstances or activities; preoccupied.
   心不在焉的，茫然的陷入沉思且未注意到周围的情况或活动的; 出神的
3. He is heedless of the noises out of the windows.
   他没有注意到窗外的嘈杂声。
4. We were heedless of danger in the condition.
   我们在那种条件下忽视了危险。

heed.less

adj.（形容词）
Marked by or paying little heed; unmindful or thoughtless.See Synonyms at careless See Synonyms at impetuous
不加注意的，掉以轻心的；缺少考虑的，不留神的参见 careless参见 impetuous

【引伸】
heed.lessly
adv.（副词）
heed.lessness
n.（名词）