generousThey were quite generous, donating to several charities.
open-handedShe is incredibly open-handed and won't hesitate to donate whenever asked.
free withOur professor is quite free with his time and will often extend office hours to accommodate extra students.
philanthropicformalThere are fewer philanthropic billionaires than one would assume.
charitableOxfam is a well-known charitable organization working to end global poverty.
liberalformalOur host was quite liberal with the wine.
lavish with/inThe country has been lavish with promises of help, but has not yet delivered.
unstintingformalShe was unstinting in her support of our project.
munificentformalShe was one of the museum's more munificent patrons.