Unbraced is the term used when something lacks support or is not reinforced. Its antonyms, however, are quite varied. To brace something means to support, strengthen or secure it. Thus, the antonyms for unbraced are words such as supported, reinforced, braced, secured, strengthened or fortified. These words imply that the object, structure, or person has undergone a process of being made stronger and more resilient. They take on added significance in different areas such as construction, engineering, and physical body support. Using the appropriate antonym for unbraced adds depth and precision to written or spoken communication.