The Clue ___ is gold: Proverb
The Answer OLD
The phrase "All that glitters is not gold" suggests that not everything shiny or attractive is valuable. The word "old" fits because it highlights the idea that true worth often comes with age and experience. In this context, "old" refers to the wisdom and value that can be found in things that may not appear shiny or new. Thus, the answer "OLD" captures the essence of the proverb perfectly.