The word "catenated" means linked or connected, but there are several antonyms to this word which convey the opposite meaning. The first antonym is "unconnected" which describes something that is not attached or related to anything else. The second antonym is "disjoined" which means the separation of something that was once connected. Another antonym is "isolated" which signifies being separated from others or a group. A word that describes a break or disconnection within a chain is "disconnected". Finally, "detached" implies that something was once connected but is no longer. Using these opposite words, we can effectively describe the state of something that is not linked or connected.