The term 'Not Yet Used' can be represented by three different crossword solutions: UNTAPPED (8 letters), NEW (3 letters), and STILLNEW (8 letters). UNTAPPED means not yet used or exploited, while NEW implies something that has not been used before. STILLNEW is a combination of the two words, meaning something that has not been used or exploited yet. All three terms refer to something that has not been used or taken advantage of yet.