The term 'more solid' can be described by five different crossword solutions: firmer (6 letters), denser (6 letters), ouuky (5 letters), saner (5 letters), and sounder (7 letters). Firmer means having a greater degree of solidity, while denser refers to having a greater mass or weight per unit volume. Ouuky is an informal term meaning reliable or dependable, while saner means having more sound judgment. Finally, sounder means being in good condition or free from defects. Together, these five words describe something that is more solid, reliable, and dependable than before.