Walk unevenly by Dodder (4)
I believe the answer is:
limp
I believe this is a double definition.
'walk unevenly' is the first definition.
(I've seen this before)
'dodder' is the second definition.
(thesaurus)
'by' is the link.
(Other definitions for limp that I've seen before include "Wanting stiffness" , "Lacking stiffness" , "Walk haltingly" , "Floppy" , "Hobble, being slack" .)