Ineffective without a canine? (9)
I believe the answer is:
toothless
I believe this is a double definition.
'ineffective' is the first definition.
(I've seen this in another clue)
'without a canine?' is the second definition.
('canine' can be 'tooth' (canine is a type of tooth) so maybe 'without a canine?' can be ''toothless')
(Other definitions for toothless that I've seen before include "Unable to chew; ineffective (sanction)" , "Deprived of power" , "Lacking in force" , "Lacking power" .)