Definition of alarmed
1 : feeling a sense of danger : urgently worried, concerned, or frightened I was alarmed to see how sick she looked. And what followed was not a miracle but a … model of how tough government, cooperative businessmen and a very alarmed public can make a dirty world clean again. — William Oscar Johnson
2 : equipped with an alarm an alarmed door Most exits were locked and alarmed, and employees had to show ID badges when they entered lab buildings. — Jennifer Nagorka
Seen and Heard
What made you want to look up alarmed? Please tell us where you read or heard it (including the quote, if possible).