The concept of "paper trails" refers to the documentation of a process or activity in a physical or digital format. Its antonyms could vary depending on the context, but they generally refer to the absence of such documentation. For example, in cases of illegal or unethical activity, the absence of paper trails could be called "cover-up," "concealment," or "obfuscation." On the other hand, in situations where the emphasis is on speed, flexibility, or innovation, having too much paper trails could be seen as a hindrance, and words like "streamlining," "simplification," or "agility" could be used as antonyms. Overall, the antonyms for "paper trails" highlight the value of transparency, accountability, and efficiency in different scenarios.