worthlessness

noun
1
a feeling that you have no good qualities or useful skills
بی‌ارزشی, بی‌قدری, خودکم‌بینی
2
the fact of having no practical or financial value
بی‌ارزشی, بی‌قیمتی
the worthlessness of all her promises to him
The country's currency descended into utter worthlessness.