A person who makes a donation or gives a gift; a donor or benefactor.
From Latin donator, derived from donare (to give) plus -or (agent suffix meaning 'one who does'). This formal term appears in legal documents and charitable contexts.
While 'donor' is the modern word, 'donator' has a grander, more official sound—it's the kind of name that would appear on a plaque in a museum or hospital!
Complete word intelligence in one call. Free tier — 50 lookups/day.