Uneven; disorderly (9)
I believe the answer is:
irregular
I believe this is a double definition.
'uneven' is the first definition.
(similar in meaning)
'disorderly' is the second definition.
(thesaurus)
(Other definitions for irregular that I've seen before include "Unpunctual" , "Erratic" , "Guerrilla fighter; not even" , "unlike full-time soldiers" , "member of the Baker Street contingent" .)