good for

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Related to good for: good for you
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good for (someone or something)

1. Having a positive effect on someone or something. More sunlight will be good for your drooping plants. Let's go to the playground. A bit or fresh air and exercise will be good for you!
2. Able to pay a debt owed. I'm good for the money, don't worry. I'll get it to you first thing tomorrow.
3. Able to work or function for some amount of time. I know it's a used car, but it ought to be good for a few more years.
4. Valid or in effect for some amount of time. How long is this warranty good for? Is this coupon really good for 50% off our total purchase?
5. An expression of approval or support of someone for something they have done or accomplished. I heard you got the promotion—good for you! Good for him. Getting an A in that class is no easy feat.
See also: for, good
Farlex Dictionary of Idioms. © 2022 Farlex, Inc, all rights reserved.

Good for you!

a complimentary expression of encouragement for something that someone has done or received. Sue: I just got a raise. Bill: Good for you! Jane: I really told him what I thought of his rotten behavior. Sue: Good for you! He needs it.
See also: for, good
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.

good for

1. Beneficial to, as in Milk is good for children. [Tenth century a.d.]
2. Financially reliable, able to pay or repay, as in They know he's good for a big tip. [Mid-1800s]
3. Able to serve or continue to function, as in This furniture's good for at least ten more years, or I hope you're not tired-I'm good for another three miles or so. [Mid-1800s]
4. Equivalent in value; also, valid for. For example, These coupons are good for a 20 percent discount, or This contract is good for the entire life of the book. [Second half of 1800s]
5. good for someone. An expression of approval, as in Good for Bill-he's sold the car, or Good for you! You passed the exam. This usage differs from the others in that orally a slight emphasis is placed on you or whoever is being mentioned. [Mid-1800s]
See also: for, good
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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References in periodicals archive ?
One can speak of a team's good condition, or a university's, or a chess club's, and one can talk about what is good for a team or university or club in ways that can be understood only by appeal to this irreducibly social goodness.
Suppose that one affirms the following: that it is a human good for one to respond properly to others' good.
Increasingly, chai's proving good for the Earth, too.
GOOD REASONS TO LET HIM GO This guy looks out for one person sure it's all good for No.
We fast, not to despise the body but to freely abstain temporarily from a good for a greater good: to focus more intently on the presence of God.
The divine longing [eros] is Good seeking good for the sake of the Good."