Frightens (6)
'frightens' is the definition.
(alarming is a kind of frightening)
This is all the clue.
(Other definitions for alarms that I've seen before include "Frightens, makes afraid" , "Warning clocks that wake us up" , "Frightens and startles" , "Alerting devices - burglars?" , "Causes fear" .)
'frightens' is the definition.
('scare' can be a synonym of 'frighten')
This is all the clue.
(Other definitions for scares that I've seen before include "Terrifies" , "Causes fear" , "Alarms" , "Affrights" , "Frightens or intimidates" .)
'frightens' is the definition.
(I've seen this in another clue)
This is the entire clue.