obvious (easy to see, notice, or understand): The answer is perfectly obvious to me.
clear (obvious and leaving no doubts): It was clear that he was lying.
crystal clear (very easy to understand): The truth was crystal clear to everyone.
apparent formal (easy to see, notice, or understand): It became apparent that we had faced a major problem.
evident formal (easy to see, notice, or understand): It is evident that she is not satisfied.
self-evident formal (evident and requiring no proof or explanation): We need to provide some truth to be self-evident.
plain (easy to understand or recognize): It was plain that they already knew each other.
