thoughtless

• adj. 轻率的；欠考虑的；考虑不周的；不顾及他人的

thought,思想，-less,无，没有。即没有思想的，引申词义粗心的。 thousand 一千 来自古英语 thusend,千，来自 Proto-Germanic*thusundi,千，词首*thu 可能来自 PIE*teue,膨胀， 鼓起，词源同 thigh,thumb,-sundi,来自 Proto-Germanic*hundam,百，词源同 hundred.该词字面 意思为好几百，后在翻译拉丁语 mille(千，词源同 million）的过程中逐渐确定为固定数词。

thoughtless (adj.)

1610s, "heedless, imprudent," from thought + -less. Meaning "inconsiderate of others" is from 1794. Related: Thoughtlessly; thoughtlessness.

1. How very thoughtless. I'll give him a piece of my mind.

真是太没头脑了，我要告诉他我很生气。

来自柯林斯例句

2. It was thoughtless of her to mention it.

她提起这事有些欠考虑。

来自柯林斯例句

3. It was just a thoughtless remark.

那不过是一句欠考虑的话。

来自柯林斯例句

4. It was thoughtless of you to forget your sister's birthday.

你真粗心,把你姐姐的生日都给忘了.

来自《简明英汉词典》

5. I wonder why you are so thoughtless of others.

我很奇怪,你为何如此不替别人着想.

来自《简明英汉词典》