The term 'not counterfeit' can be broken down into four crossword solutions: REAL (4 letters), GOOD (4 letters), TRUE (4 letters), and BONAFIDE (8 letters). The term 'not counterfeit' is used to describe something that is genuine, authentic, and of good quality. The word REAL implies that the item is genuine and not a copy or imitation. The word GOOD implies that the item is of high quality and not defective. The word TRUE implies that the item is accurate and not false or misleading. Finally, the word BONAFIDE implies that the item is legitimate and not fraudulent.