Disorderly old tax collectors going as predicted? (9)
I believe the answer is:
irregular
'disorderly' is the definition.
(thesaurus)
'old tax collectors going as predicted?' is the wordplay.
I cannot really see how this works, but
'as' could be 'eg' ('as' and 'e.g.' can both mean for example) and 'eg' is found within the answer.
'tax collectors' could be 'ir' (abbreviation for Inland Revenue) and 'ir' is present in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for irregular that I've seen before include "Rough - dishonest" , "Rough - guerrilla" , "Out of order" , "Not uniform" , "Lacking continuity or contrary to the rule" .)