The word "fidgeted" is often used to describe someone who is restless or nervous and unable to sit still. There are a number of synonyms that can be used to convey this same meaning, including "squirmed," "twitched," "jiggled," and "fussed." Other options might include "fretted," "fiddled," "wandered," or "restlessly shifted." While the exact choice of word may depend on the context in which it is being used, the key is to find a term that accurately captures the sense of restless movement and nervous energy that is often associated with the act of fidgeting.