Scare away worries (5)
I believe the answer is:
cares
'worries' is the definition.
(I've seen this in another clue)
'scare away' is the wordplay.
'away' indicates an anagram (letters move away from their original places).
'scare' anagrammed gives 'CARES'.
(Other definitions for cares that I've seen before include "Worries, anxieties" , "Has concerns or interest" , "Feels interest or concern" , "Minds" .)