One more way in which language defies logic is the abuse of prefixes, suffixes and infixes. You think that if rewind means wind back, refill means fill again, reload means load again, undo means opposite of do... that you can just go ahead and guess what the next combination of prefix and a word will mean?
You're very, very wrong. Guesswork will lead you astray. There are no rules to guide you, there's only a list.