careless

a.
1. free from care无忧无虑的。
△Wiv.5.5.58(52):“careless infancy；”无忧无虑的婴儿（时代）。
△As.2.1.52:“Anon a careless herd,/Full of the pasture,jumps along by him/And never stays to greet him.”不久有一群吃得饱饱的、无忧无虑的鹿，从它身边跳跃过去，也不停下来向它打个招呼。
2. heedless掉以轻心的。
△3H.Ⅵ.2.2.37:“What mygreat-grandfather and grandsire got/My careless fa-ther fondly gave away?”我的曾祖父和祖父所辛苦挣来的江山却被我那胡里胡涂的父亲愚蠢地断送了。
3. uncared-for,not worth caring about,worthless没人注意的，不值得计较的，无价值的。
△Mac.1.4.10: “Tothrow away the dearest thing he owed,/As ’twere acareless trifle.”把他自己最宝贵的东西竟如同草芥一般抛掉了。