alarmingchange
nounUK /əˈlɑː.mɪŋ tʃeɪndʒ/
US /əˈlɑːr.mɪŋ tʃeɪndʒ/
A change that makes you feel worried or scared.
The sudden alarming change in the weather made everyone rush indoors.
OTHER MEANINGS
2. A change that happens very fast and seems dangerous.
Scientists noticed an alarming change in the ice at the poles.
3. A change that makes people feel unsafe or uneasy.
The alarming change in the school rules upset many students.
4. A shift that signals something bad might happen.
The alarming change in his health made the doctor act quickly.