The antonyms for "leave evidence" would include "disprove", "erase", "obliterate", "conceal", "withhold", and "hide". These words indicate actions that are opposite or contrary to leaving evidence, suggesting that evidence is not being left behind. For instance, when one tries to disprove something, they are attempting to negate evidence that may exist. Erase and obliterate mean removing traces of evidence that existed at some point. Conceal, withhold, and hide all infer that evidence is being kept confidential and not being shared with others. Whereas "leave evidence" implies leaving some concrete proof or hint for others to discover, the antonyms listed here indicate efforts to do the opposite.