worthless

adjective
1
having no practical or financial value
بی‌ارزش, بی‌فایده, بی‌هوده
opposite valuable
2
having no good qualities or useful skills
بی‌ارزش, بی‌فایده, بی‌خاصیت
He's just a worthless individual.
Constant rejections made him feel worthless.