The term 'hold water' is an idiom that means to be valid or true. The crossword solutions for this term are WASH (4 letters), ADDUP (5 letters), COHERE (6 letters), and RIGHTFUL (8 letters). WASH is a verb meaning to cleanse something with water, ADDUP is a verb meaning to calculate the sum of two or more numbers, COHERE is a verb meaning to stick together, and RIGHTFUL is an adjective meaning just or lawful. Therefore, the crossword solutions for the term 'hold water' suggest that something is valid or true because it is clean, calculated correctly, sticks together, and is just or lawful.