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general::
Phrase(s): Don’t quit your day job. [and] Don’t give up your day job.
Don’t quit your regular job in hopes that you can support yourself doing this task that you do not do very well. • I saw your comedy act at the nightclub. Don’t quit your day job! • So, you laid the bricks in this wall. Well, don’t quit your day job.
McGrawhill's American Idioms And Phrasal Verbs