The word "de-fended" implies protection or defense against something negative or harmful. Antonyms for this word would therefore include terms that suggest a lack of protection or vulnerability. Examples of antonyms for "de-fended" could be "unprotected," "exposed," "vulnerable," "opened," or "unshielded." These words suggest the opposite of protection and indicate a lack of security, leaving the subject or object exposed to potential harm or danger. It's important to understand antonyms for words like "de-fended" in order to fully understand the implications of the original term and its opposite meanings.