The term 'charitable one' can be defined by three crossword solutions: DONOR, SPONSOR, and GIVER. A DONOR is someone who gives money or goods to a cause or organization. A SPONSOR is someone who provides financial or other support for an event, activity, person, or organization. A GIVER is someone who freely gives something, usually money or goods, to another person or organization. All three of these terms refer to someone who is generous and kind-hearted, making them a charitable one.