3 [countable] [usually plural] a reason for what you say or do, or for being allowed to say or do something
ground for: There do seem to be some grounds for their complaints.
reasonable grounds: He believes he has reasonable grounds for making the demand.
on (the) grounds of: The Act prohibits discrimination on the grounds of sex or marital status.
on medical/legal/financial etc grounds: The army turned him down on medical grounds.
on the grounds that: They oppose the bill on the grounds that it is too restrictive.
Synonyms and related words