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).
雙語(yǔ)例句
1. The affixes " un - " and " - less " are often used make negative words, such as unhappy or careless.