Folk star's alarming words (7)
I believe the answer is:
menaces
'alarming words' is the definition.
('menaces' can mean threatening words)
'folk star's' is the wordplay.
'folk' becomes 'men' (I've seen this in other clues).
'star's' becomes 'aces' ('ace' can be a synonym of 'star').
'men'+'aces'='MENACES'
(Other definitions for menaces that I've seen before include "Threats" , "Threatens" .)