Stumped by ‘Close Up Tight’ in Crossword? Decode the Answer Here!

The clue “Close up tight” is referring to the act of sealing, which means to close or secure something tightly in order to prevent air, water or other substances from entering or escaping. In this context, the answer to the crossword question is “SEAL“. A seal can be used for many purposes such as sealing an envelope, sealing a bottle or jar, or even sealing a wound with a bandage. Therefore, the answer to this question appropriately fits the clue and completes the puzzle.