Alarmingly
The Century Dictionary and Cyclopedia
In an alarming manner; with alarm; in a manner or degree to excite apprehension.
Wiktionary, Creative Commons Attribution/Share-Alike License
adverb.
In an
alarming
way, frighteningly.
adverb.
Causing fear or concern.
adverb.
To an extent that causes alarm.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adverb.
in an alarming manner