Flimsy /ˈflɪm.zi/ adj.
1) A flimsy cardboard box 薄纸板箱
e.g. These flimsy cardboard boxes are practically useless. Every thing keeps falling out. 这些薄纸板箱实际没啥用,东西都掉出来了。
2) 观点说法站不住脚的
e.g. When I asked him why he was late, he gave me some flimsy excuse about having car trouble. 我问他为什么迟到时,他给了个很不足信的借口,说车出毛病了。