alarm

1 alarm /əˈlɑɚm/ noun
plural alarms
1 alarm
/əˈlɑɚm/
noun
plural alarms
Britannica Dictionary definition of ALARM
1 
[count]
a  : a device that makes a loud sound as a warning or signal
◊ In figurative usage, when alarm bells are ringing people are worried about a possible problem or danger.
— see also burglar alarm, false alarm, fire alarm, smoke alarm
b  : alarm clock
2 
[noncount] : a feeling of fear caused by a sudden sense of danger
Synonyms see: [1]fear
3 
[count] : a warning of danger
2 alarm /əˈlɑɚm/ verb
alarms; alarmed; alarming
2 alarm
/əˈlɑɚm/
verb
alarms; alarmed; alarming
Britannica Dictionary definition of ALARM
[+ object]
: to cause (someone) to feel a sense of danger : to worry or frighten (someone)

— alarmed

adjective [more alarmed; most alarmed]

— alarming

adjective [more alarming; most alarming]

— alarmingly

/əˈlɑɚmɪŋli/ adverb