形容词

1. 不结实的;劣质的;不牢固的
A flimsy object is weak because it is made of a weak material, or is badly made.

2. (衣服或布料)薄的，不御寒的
Flimsy cloth or clothing is thin and does not give much protection.

3. 站不住脚的;不足信的
If you describe something such as evidence or an excuse as flimsy, you mean that it is not very good or convincing.