1. To show or to demonstrate plainly; to reveal: The prosecutor at the trial was able to manifest evidence that proved the accused was guilty of the crime.
2. To record a ship's list of cargo or passengers it is carrying on a ship or an aircraft: The captain's assistant manifested an invoice of goods that had been brought aboard for transportation to another destination.
3. Etymology: originally, "that which can be seized by the hand"; compounded of Latin manus, "hand" and -festus, "capable of being seized".

Show things clearly, through signs or actions.