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1. Good fortune or a favorable occurrence. I've never had good luck finding anything in my size at that store. Oh, it was just good luck that she scored that basket from half court.
2. An expression of one's hope that someone else has a favorable or positive experience. I hope you do great on your test today! Good luck!
3. An ironic expression indicating that what has been proposed or what someone is trying to do will be very difficult (i.e. it will require a lot of luck to succeed). A: "I'm hoping to get all 300 of these filed before the end of the day." B: "Ha, good luck." Good luck trying to convince him, because he won't listen to reason.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
1. a wish of good luck to someone. Mary: I have my recital tonight. Jane: I know you'll do well. Good luck! Sally: I hear you're leaving for your new job tomorrow morning. Bob: That's right. Sally: Well, good luck!
2. You will certainly need luck, but it probably will not work. (Sarcastic.) Bill: I'm going to try to get this tax bill lowered. Sue: Good luck! Bill: I'm sure I can get this cheaper at another store. Clerk: Good luck!
See also: good
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.