Squared off can be defined as making something even or levelled or closing up something in a squared shape. Conversely, the antonyms of squared off can be uneven or asymmetrical. The opposite of closing something off would be opening it up or expanding it. Thus, the antonyms of squared off can be distorted, irregular, contorted or misshapen. It can also be seen as unbalanced or disproportionate. Additionally, the antonym of squared off can be opened up, unblocked, or unplugged. Therefore, we can conclude that the antonyms of squared off include uneven, distorted, open, unblocked, disproportioned, contorted and misshapen.