careless
adj.not taking care;thoughtless不小心的，粗心的
Careless smokers throw their cigarette butts into the subway vent,blocking it up.
粗心的煙民把煙蒂扔進地鐵的通風孔里，造成了堵塞。
fearless
adj.without fear大膽的
Our fearless platoon sergeant led the attack and was the first one to be injured.
我們天不怕地不怕的副排長帶頭發起了這次進攻，他也是第一個負傷的。
headless
adj.inattentive不注意的
A headless man haunts the castle.
一個無頭幽靈常在城堡出現。
listless
adj.too tired to show interest or do anything倦怠的，沒精神的，冷淡的
Reacted to the latest crisis with listless resignation.
對最近的危機所作的反應是無精打采的放棄
homeless
adj.無家可歸的
ex)A kind-hearted old man adopted the homeless child.一個好心的老頭收集養了這個無家可歸的小孩子。