The word "un-latched" refers to something that is not secured or locked. The antonyms for this word are "latched," "secured," "locked," and "fastened." When something is latched, it means it is securely closed, and it cannot be opened without using a key or a specific mechanism. Similarly, when something is secured or locked, it is made safe and protected from unauthorized access. Conversely, "un-latched" implies that something is left open, exposed or vulnerable to theft or damage. Therefore, it is crucial to keep things latched, secured, and locked to ensure safety and security.