This character is raising suspicions about forbidden knowledge or hidden powers that they may possess, attracting unwanted attention. This includes demonstrating knowledge of psionics, cryptozoology, extraterrestrials, and other such "occult" subjects, or being found in the possession of objects related to these subjects, marked with the Whatcha Got There? attribute.
Should a Psychic or Sorcerer continue to raise suspicions with the wrong crowd, they'll become irrevocably Witchmarked.
Being Suspicious can mask certain other more serious Special Attributes, as well as some Status Effects:
In these cases, the original SA or SE is purposefully Hidden until discovered by dialogue or investigation.