Definition of good for (someone or something)
1 —used to express approval of someone "I passed the exam!" "Good for you!""He got the job." "Good for him!"
2 : resulting in something good or desirable for (someone or something) Regular exercise is good for you. Hot soup is good for a cold. Being with friends is especially good for him right now.
3 —used to say how long something will continue or be valid This offer is good for the remainder of the month.Our old car still runs and should be good for a few more years.
4 somewhat informal : able to provide or produce (something) I'm good for a hundred dollars if you need a loan.
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