flimsy

adjective
1
badly made and not strong enough for the purpose for which it is used
سست, بی‌دوام, شکننده
synonym rickety
2
thin and easily torn
نازک, بی‌دوام
a flimsy piece of paper/fabric/plastic
3
difficult to believe
بی‌پایه, بی‌اساس, سست‌و‌بی‌پایه, غیرقابل‌باور
a flimsy excuse/explanation
The evidence against him is pretty flimsy.
He keeps calling on the flimsiest of pretexts.
synonym feeble