Overshielding can be defined as providing too much protection or cover. There are several synonyms for this word, including overprotecting, overdefending, overguarding, and overinsulating. Each of these terms highlights the excessive nature of the shielding or protection being provided. Other possible synonyms for overshielding could include overburdening, overcoddling, or smothering, depending on the context in which the word is being used. When trying to convey the idea that someone is being overly cautious or protective, words like these can be helpful in emphasizing the excessive nature of their behavior.