* Clarity: When something is clear and straightforward, there's no dilemma.
* Certainty: If you're sure of the right choice, there's no need to be conflicted.
* Ease: A situation without difficulty or conflict wouldn't be a dilemma.
* Solution: If a problem has been resolved, there's no longer a dilemma.
* Choice: While not directly opposite, "choice" implies a lack of conflict, as you're choosing something you desire.
The best antonym depends on the specific context of the dilemma you're trying to describe.