Call admissions of debt questionable (7)
I believe the answer is:
dubious
'questionable' is the definition.
('dubious' can be similar in meaning to 'questionable')
'call admissions of debt' is the wordplay.
'call' becomes 'dub' (dubbing is a kind of calling).
'admissions of debt' becomes 'ious' (I've seen this in other clues).
'dub'+'ious'='DUBIOUS'
(Other definitions for dubious that I've seen before include "Arousing suspicion" , "Doubtful, uncertain" , "Sceptical, doubtful" , "Of questionable value" , "Unsure, unconvinced" .)