- 1alarmed (at/by something) anxious or afraid that something dangerous or unpleasant might happen She was alarmed at the prospect of traveling alone. Thesaurusafraidscared frightened terrified alarmed paranoidThese words all describe feeling or showing fear.afraid [not before noun] feeling fear; worried that something bad might happen:There's nothing to be afraid of. Aren't you afraid (that) you'll fall?scared feeling fear; worried that something bad might happen:The thieves got scared and ran away. She was scared that the glass would break.frightened feeling fear; worried that something bad might happen:a frightened childafraid, scared, or frightened?Scared is more informal, more common in speech, and often describes small fears. Afraid cannot come before a noun. It can only take the preposition of, not about. If you are afraid/scared/frightened of something, or afraid/scared/frightened to do something, you think you are in danger of being hurt or suffering in some way. If you are scared/frightened about something, it is less a fear for your personal safety and more a worry that something unpleasant might happen.terrified very frightened:I was terrified (that) she might follow me. She looked at him with wide, terrified eyes. I was terrified of flying.alarmed afraid that something dangerous or unpleasant might happen:She was alarmed at the prospect of traveling alone.paranoid (somewhat informal) afraid or suspicious in a way that is not reasonable:You're just being paranoid.Patterns afraid/scared/frightened/terrified of spiders, etc. scared/frightened/paranoid about … afraid/scared/frightened/terrified that … afraid/scared/frightened to open the door, etc. Don't be afraid/scared/frightened/alarmed.
- 2protected by an alarm This door is alarmed.
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NAmE//əˈlɑrmd//[not before noun]