Frighten cares away (5)
I believe the answer is:
scare
'frighten' is the definition.
(I know that frighten can be written as scare)
'cares away' is the wordplay.
'away' indicates anagramming the letters (letters move away from their original places).
'cares' anagrammed gives 'SCARE'.
(Other definitions for scare that I've seen before include "Greatly frighten" , "Health worry" , "Startle" , "Frighten or intimidate" , "Frighten, alarm" .)