Render Solid is a phrase commonly used to describe the act of making something sturdy or dense. The antonyms for Render Solid include words like collapse, disintegrate, weaken, crumble, and decay. These words have an opposite meaning to Render Solid, suggesting a sort of deterioration or lack of stability. For instance, if a wall is Rendered Solid, it will be difficult to break down or move. However, if it collapses, it means that it's no longer sturdy and can easily be moved or broken. So, the antonyms offer an opposing perspective to what Render Solid means, highlighting the importance of stability, and the potential risks that can arise when things lack solidity.