Armor-clad is a term that means to be fully protected by armor, and hence, antonyms for it would comprise of words that convey a sense of vulnerability, exposure, and defenselessness. Some possible opposites of armor-clad could be unguarded, unarmed, unprotected, vulnerable, exposed, naked, or defenseless. While armor-clad implies a sense of strength and protection, these antonyms paint a picture of someone who is at risk and susceptible to harm. Words like unshielded or exposed would be appropriate antonyms, as they suggest a lack of protection and a greater risk of danger. Ultimately, the antonyms for armor-clad would be words that describe being unsafe, exposed, and unprotected.