The term FRUGAL ONE can be defined by four crossword solutions: MISER (5 letters), SAVER (5 letters), STINTER (7 letters), and SPARER (6 letters). A MISER is someone who is extremely unwilling to spend money or use resources. A saver is someone who puts money away for future use. A stinter is someone who is careful with their spending and avoids waste. Lastly, a sparer is someone who is economical with their resources. All of these terms refer to someone who is frugal and careful with their money and resources.