Over-brims is a word that refers to something that overflows, exceeds or spills over the brim or edge. Therefore, the antonyms for over-brims are words that relate to something that is under-filled, incomplete, or insufficient.
Under-brims would be the direct opposite of over-brims, indicating that something is not filled to its full capacity. Additionally, other antonyms might include underflow, inadequacy, scarcity, and lack. These words, when used in context, serve to describe situations where something is less or not enough than required.
Therefore, it's essential to understand the appropriate antonyms that help to create balance and bring contrast in any given text, especially when applied to words such as over-brims.