Suspected or figured out (6)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
sussed
'suspected or figured out' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for sussed that I've seen before include "getting found out" , "In the know" , "Checked out, looked into" , "Suspected or figured out" , "Well informed - aware" .)