Charybdis, for one (9)
I believe the answer is:
maelstrom
'charybdis for one' is the definition.
(I know that Charybdis is a type of maelstrom)
This is all the clue.
(Other definitions for maelstrom that I've seen before include "confused state of affairs" , "Confused situation" , "Whirlpool, turmoil" , "great confusion" , "violent upheaval" .)