Must relax about ringing alarms! (6)
I believe the answer is:
alerts
'alarms' is the definition.
('alert' can be a synonym of 'alarm')
'must relax about ringing' is the wordplay.
'ALERTS' is hidden backwards within the letters.
However, I am unsure how this is indicated.
Can you help me to learn more?
(Other definitions for alerts that I've seen before include "danger-signals" , "Puts on guard, forewarns" , "Puts on guard, warns about impending danger" , "Alarms, warning signals" , "Warns, draws attention to" .)