Give somebody/something up as a bad job phrase
To determine that it is no use doing something or altering someone and then cease making any effort to do it.
I tried to jump over that fence several times, but it was no use. Therefore, I gave it up as a bad job.
If I had given studying English as a bad job, I wouldn't be able to speak English now.
He took the phone that I had thrown away and repaired it. Now, I regret giving repairing it as a bad job too soon.
The verb "give" must be conjugated according to its tense.
The origin of this phrase is not clear.
To tell someone the truth about something that they had not understood or received false information
I have to set my wife straight about what happened yesterday.