give something up as a bad job

US /ɡɪv ˈsʌmθɪŋ ʌp əz ə bæd dʒɑb/
UK /ɡɪv ˈsʌmθɪŋ ʌp əz ə bæd dʒɑb/
"give something up as a bad job" picture
1.

darse por vencido, tirar la toalla

to stop trying to do something because you realize that you will never succeed

:
After hours of trying to fix the old car, he decided to give it up as a bad job.
Después de horas intentando arreglar el coche viejo, decidió darse por vencido.
I tried to teach her how to knit, but she just couldn't get the hang of it, so I had to give it up as a bad job.
Intenté enseñarle a tejer, pero no le cogía el truco, así que tuve que darse por vencido.