1
be thoughtless
作表语，表示人行为粗心或不顾他人。
He is often thoughtless towards his colleagues.
他常常不顾及同事的感受。
粗心的；欠考虑的
先理解核心含义，再看它在真实句子里的用法。
粗心的；欠考虑的
Lacking careful thought or consideration; careless.
He is often thoughtless towards his colleagues.
他常常不顾及同事的感受。
缺乏思考的；粗心的
Marked by or showing lack of due thought or care.
缺乏仔细思考
showing lack of careful thought
不顾及他人的；不体贴的
Inconsiderate, inattentive.
不关心或不考虑他人
without care or thought for others
It was thoughtless of him to leave the door unlocked when he went out.
他外出时没锁门，真是太粗心了。
AI contextual example
She regretted her thoughtless comment as soon as she saw his hurt expression.
她一看到他受伤的表情就后悔自己说了那句欠考虑的话。
AI contextual example
A thoughtless driver sped through the puddle, splashing pedestrians.
一个粗心的司机快速驶过水坑，溅了行人一身水。
AI contextual example
the debate turned into thoughtless bickering
这场辩论变成了欠缺考虑的争吵。
WordNet
作表语，表示人行为粗心或不顾他人。
He is often thoughtless towards his colleagues.
他常常不顾及同事的感受。
后接人或事物，表示对...缺乏考虑。
She made a thoughtless remark about his appearance.
她发表了一句不顾及他外表的评论。
it形式主语，真正主语为不定式，批评某人做某事欠考虑。
It was thoughtless of you to forget her birthday.
你忘记她的生日真是太粗心了。
Not this
He thoughtless left the room.
Use this
He thoughtlessly left the room.
形容词"thoughtless"不能直接修饰动词，需要用副词形式"thoughtlessly"。
Not this
It was thoughtless for him to forget her birthday.
Use this
It was thoughtless of him to forget her birthday.
表示"某人做某事不体贴"时，固定搭配为"It is/was thoughtless of somebody to do something"，介词用"of"而非"for"。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
轻率的话语
His thoughtless remark hurt her feelings.
他轻率的话语伤了她的感情。
欠考虑的行为
Breaking the vase was a thoughtless act.
打碎花瓶是欠考虑的行为。
不顾及他人的行为
Her thoughtless behavior made everyone uncomfortable.
她不顾及他人的行为让大家很不舒服。
草率的决定
He regretted his thoughtless decision to quit.
他后悔自己草率的辞职决定。
不体贴的话
She was upset by his thoughtless words.
她被他不体贴的话惹恼了。
一句带来平静的话，胜过千句不经思考的话。
A single thoughtless comment can undo years of trust.
一句轻率的评论就能毁掉多年的信任。
我只想什么都不想。
The song uses 'thoughtless' to describe a desire to escape overwhelming feelings.
这首歌用“thoughtless”来描述逃避强烈情绪的愿望。
Use thoughtless naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
联想：thought（思考）加-less（无），无思考即粗心、不体贴。
语域：neutral 常见场景：日常对话、一般书面语 该词为中性偏负面的形容词，常用于日常交流或一般书面语，多指说话做事欠考虑，或不顾及他人感受。
作形容词，常用结构：be thoughtless of sb/sth，表示‘不顾及...的’
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.