Cause to stumble (4,2)

'cause to stumble' is the definition.
(synonyms)
This is all the clue.
(Other definitions for trip up that I've seen before include "Catch out or cause to stumble" , "Alpine excursion, perhaps" , "Blunder" , "fluff" , "'Cause to stumble (4,2)'" .)
'cause to stumble' is the definition.
(synonyms)
This is all the clue.
(Other definitions for trip that I've seen before include "Pleasure excursion" , "Catch one's foot" , "Set off for" , "Journey for some purpose" , "blunder" .)