One synonym for "un confused" could be clear-headed, meaning someone who has a clear and rational mind, free from confusion and ambiguity. Another synonym is composed, describing someone who is calm and level-headed in any situation, unfazed by uncertainty or chaos. Serene is also a synonym, suggesting a sense of tranquility and peacefulness, unencumbered by mental distress or confusion. Another similar word is lucid, indicating clarity and understanding, free from any ambiguity or obscurity. Finally, unambiguous is another synonym, describing something that is clear and straightforward, devoid of any confusion or doubt.