The crossword solution for the term PLENTIFUL SOURCE is FONT, which is a four-letter word. A FONT is a set of typefaces used to create a certain look and feel in a document or other form of text. Fonts are used to create visual appeal and to make text easier to read. Fonts can be used to create a variety of effects, from bold and italicized text to decorative lettering. Fonts are an important part of any design project, as they can help to convey a message or evoke a certain emotion.