Formidable (6)
'formidable' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for potent that I've seen before include "Concentrated or strong, like liquor" , "Forceful" , "Intoxicating" , "Strong or effective" , "Top Ten (anag.)" .)
'formidable' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for fearsome that I've seen before include "Frightful" , "Of frightening appearance" , "Formidable" , "Dreadful" , "Awful" .)