give somebody/something up as a bad job
give (one) up as a bad job
To cease trying to get one to change because it seems like a futile task. Just give him up as a bad job—you'll never get him to be the responsible man you're looking for.
give up (something) as a bad job
To cease a task or activity that one finds useless. A: "What should I do? The tent keeps blowing over in this wind." B: "Oh, just give it up as a bad job."
give something up as a bad jobdecide that it is futile to devote further time and energy to something. informal
2005 Theresa Green A Quiet Crusade Sixth was startled to such a degree that he actually got up out of his basket and followed Maddie around for almost ninety seconds before giving it up as a bad job and going back to bed.