Dives in ice after slipping on the fence (10)
I believe the answer is:
indecisive
'on the fence' is the definition.
(similar in meaning)
'dives in ice after slipping' is the wordplay.
'after slipping' indicates an anagram.
'dives'+'in'+'ice'='divesinice'
'divesinice' anagrammed gives 'INDECISIVE'.
(Other definitions for indecisive that I've seen before include "Not settling an issue" , "Dithery" , "Vacillating" , "on the fence" .)