be good for (someone or something)(redirected from am good for them)
be good for (someone or something)
To have a positive effect on someone or something. More sunlight will be good for your drooping plants.
See also: good
be ˈgood for something
1 be likely to be able to give or provide something: I’ll ask my aunt if she can help us. She’ll be good for a small loan, I’m sure.
2 be likely to live, last, etc. for a period of time: This car’s probably good for another 20 000 miles.