The school alarm may have gone off, during school, which means the school was evacuated.
It was alarming how fast he grew.
Alarming There is an alarming amount of cheating going on in the classroom.
Marie with some alarm called the Police after hearing the tree brush against the window.
soothingly
Shay's rebellion
The most alarming confederate threat to the Union blockade was the ironclad Merrimack.
this means that something goes or climbs very rapidly eg: :" the crime in our city is going up and an alarming rate"
No.
A. A.
Missile Deffence Alarming System
001-
it means alarming, scary, threatening, frightening