'permissible grounds' is correct and usable in written English.
You can use it to refer to reasons that make a certain action or decision legally or morally acceptable. For example, "The school board argued that budget cuts were permissible grounds for not filling the janitor position."
Charles Cooper, an Assistant Attorney General, showed only meanness and ignorance when he advised, in a gratuitous opinion last June, that the fear of contagion is a permissible ground on which to dismiss AIDS victims.
It's going to be a puzzle sometimes to work out what's a bunker and what isn't, and when it's permissible to ground the club.
Motivated by these results, a management model optimizing the permissible on-ground contaminant loading mass together with pumping rates was developed and applied to field investigation and monitoring data from Icheon, Korea.
Terminations in both jurisdictions are only permissible on the grounds of a threat to the life of the mother.
I don't think we need to settle this debate to conclude that a rule permitting issuer-licensed insider trading is permissible on consequentialist grounds.
For months after the disaster, the government flip-flopped on the level of radiation permissible on school grounds, causing continuing confusion and anguish about the safety of schoolchildren here in Fukushima.
Or, as Ms. Kagan characterized the argument in her article, that regulation is permissible "on the ground that corporate wealth derives from privileges bestowed on corporations by the government".
Those boxer tattoos have faded in popularity, but they turned out to be permissible on First Amendment grounds, said Marc Ratner, the executive director of the Nevada State Athletic Commission.
The word only raises the possibility that discrimination may be permissible on the basis of one of the proscribed grounds in combination with some other factor, such as age or state of health.
(Only material that grows in the ground is permissible).
