adj. 粗心的;无忧无虑的;漫不经心的,不介意的;淡漠的;
💡 care关心 + less不...的 → a.粗心的,漫不经心的
"It was careless of me to leave the door open."
怪我粗心忘了关门。
近义:thoughtless, slovenly, imperviable, impervious, imprudent, inadvertent
反义:heedful, intent, mindful, observant, vigilant, watchful