untraceable

• 形容无法找到、追踪或查明的事物，尤其指难以追踪其来源、去向或行踪。

Describes something that cannot be found, followed, or tracked.

1. Impossible to trackC1formal

   Not able to be followed, located, or discovered through investigation or tracking methods.

   无法追踪

   • The anonymous payment was designed to be untraceable.
   • The signal from the device became untraceable in the mountains.
   • The hacker used an untraceable IP address to avoid detection.

   同义词invisibleundiscoverableunidentifiable

   反义词traceabletrackable