Good luck is what you say to wish someone success when they have something difficult ahead: an exam, a job interview, a move, a performance. To say what you wish them luck with, add with and a noun, or a verb with -ing: Good luck with your exam, Good luck finding a job. The phrase is neutral and suits a friend, a colleague or an email.
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Good luck with + noun; Good luck + -ing; wish somebody luck; Good luck! → Thanks!
- Good luck with your presentation tomorrow! I'm sure the clients will love it.
- 'I'm flying to Seoul for my first business trip.' 'Good luck! Send me a photo when you land.'
- Good luck finding a flat near the university. They go really fast in September.
What changed
First versionMy driving test is at nine tomorrow. Wish me a luck!
RevisionMy driving test is at nine tomorrow. Wish me luck!
In English, luck is uncountable, like advice or news, so it doesn't take a: good luck, wish me luck, with any luck. A appears only before a word that measures luck: a bit of luck, a stroke of luck.
Said in a mocking tone, Good luck with that! means the speaker doesn't believe you'll succeed: 'I'm going to learn Chinese in a month.' 'Good luck with that!' To keep your wish from sounding sarcastic, add something warm: Good luck, you'll be great!
Your turn
My friend has a job interview tomorrow, so I texted her, '___! Let me know how it goes.'
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Good luck — Your friend's interview is only tomorrow, and you ask her to tell you afterwards how it went, so you wish her luck: Good luck. Well done is praise for something that has already worked out, and nothing has happened for your friend yet.
Write a message to a friend or colleague who has an important event coming up. Name the event and when it is, and wish them luck using good luck.
Good luck with the marathon on Sunday, Sasha! I'll be waiting for you at the finish line.
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