A requested word! Manifesto, meaning "a public declaration of political ideas," actually used to mean "to apprehend". The farthest back it can be traced is the Proto-Indo-European word man, meaning "hand". You can see how this appears unchanged in the prefix of the name, but it's actually gone through quite a couple alterations. It Latin this word eventually became manus, "that of the hand" or "strength". As Latin aged, a bunch of words were combined randomly to make more complicated words, and someone along the line created manifestus, a combination of manus and festus, which meant "struck". Thus manifestus became "hand-struck." Eventually its definition transitioned to mean "apprehended," because one who was "apprehended" was "struck by a hand". When one is apprehended, one usually confesses, so the truth can come from being apprehended. Because of these connections, manifestus changed from "hand-struck" to mean "elucidate or make clear". As many Latin words did, this stayed in the area to become the Italian term manifesto, now describing the handy, striking, and elucidating declarations of a political party. This eventually passed into English, with the same definition and spelling.
Adam Aleksic, a rising sophomore studying linguistics and government at Harvard University, has been described as the internet's sixth most famous etymologist. He also has disturbing interests in politics, vexillology, geography, board games, conlanging, and law.