Munificent - adjective.
Here's another word from the cursed puzzle book of mine, which went into the recycling bin not too long ago. I like this word a lot though--it's unique!
To be Munificent is to be either extremely generous and giving or have that quality about you. For example, "My uncle Roger was always munificent with his time" or "When uncle Roger passed away, he left me a munificent amount of money in his will".