flimsiness

noun
1
the fact of being badly made and not strong enough for the purpose for which it is used
سستی, کم‌دوامی, بی‌استحکامی, بی‌دوامی
2
the quality in material of being thin and easily torn
نازکی, سستی, ناپایداری
3
the fact of being difficult to believe
بی‌پایگی, بی‌اعتباری
synonym feebleness