Wobbled on the brink (8)
I believe the answer is:
teetered
'wobbled on the brink' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for teetered that I've seen before include "Moved unsteadily" , "Seesawed or vacillated" , "Rocked on the edge" , "Tottered, on the brink say" , "Move unsteadily, tottered" .)