"More addle-headed" is a phrase that is used to describe someone who is even more confused or muddled than before. Some synonyms for this phrase include "more scatterbrained," "more befuddled," "more bewildered," "more disoriented," or "more perplexed." These words all share the same meaning that the person is experiencing a lack of clarity or understanding. Using synonyms to describe a person's state of confusion can add depth to writing and help to paint a more vivid picture of the individual's mental state.