Old English carleas "free from anxiety; unconcerned," from care (n.) + -less; a compound probably from Proto-Germanic. Original senses extinct by mid-17c.; main modern meaning "not paying attention, inattentive, not taking due care" is first recorded 1560s (in carelessly).
实用例句
1. The affixes " un - " and " - less " are often used make negative words, such as unhappy or careless.
词缀un - 和 -less 常用来构成否定词, 如unhappy和careless.
来自《简明英汉词典》
2. They could not afford to spoil those maps by careless colouring.
若是上色的时候不小心弄坏了那些地图，他们可承担不起。
来自柯林斯例句
3. That shows a fairly careless attitude to clothes, doesn't it?
那表明此人不讲究穿着，是吧？
来自柯林斯例句
4. Mr Clarke had pleaded guilty to causing death by careless driving.
