Dubious in nature, containing hint of confusion? (9)
I believe the answer is:
uncertain
'dubious' is the definition.
('uncertain' can be similar in meaning to 'dubious')
'in nature containing hint of confusion?' is the wordplay.
'hint' says to take the initial letters (I've seen 'hint of' mean this).
'of confusion?' is an anagram indicator (I've seen 'confusion' mean this).
The first letter of 'containing' is 'c'.
'in'+'nature'+'c'='innaturec'
'innaturec' with letters rearranged gives 'UNCERTAIN'.
(Other definitions for uncertain that I've seen before include "Not definite" , "Not definitely known" , "Lacking confidence" , "Doubtful, indecisive" , "Changeable" .)