Douglas Harper's Etymology Dictionary
Wiktionary
adv. 1 In an alarming way, frighteningly. 2 Causing fear or concern. 3 To an extent that causes alarm.
WordNet
adv. in an alarming manner; "It grew alarmingly fast"
Usage examples of "alarmingly".
About the end of July 1805 the embarrassment which sometime before had begun to be felt in the finances of Europe was alarmingly augmented.
Nearly half of the ceiling had collapsed, and the resulting pile of polyp slivers had agglutinated in an alarmingly concave wall, as though the avalanche had halted half-way through.
Syrinx watched in utter fascination as the two passed within fifty metres of the boat, rocking it alarmingly in their pounding wake.
By the time he finally lifted from the pad the fusion generator was operating alarmingly close to maximum capacity.
The lanky slicer was peering through an access panel with his magnispecs flipped down, manipulating a micrograbber in each hand and muttering to himself in a high-pitched, staccato manner that sounded alarmingly like machine code.
The closest point of the alarmingly solid mass was seventeen kilometers away.
Morton on a long winding route through tough passes and clinging to contour lines along alarmingly steep slopes.
Gravity warped alarmingly as they started to traverse the cliff, making it seem as if they were vertical during the whole transition.
Maintenancebots stood along the base of the walls, their wide, flexible crawler trolleys looking alarmingly spindly for the weight they had to carry.
But now, with the islands rotating - no matter how slowly - even that could not be relied upon, and the alongshore races were alarmingly unpredictable.
Nervous Prostration, or Nervous Weakness, and, to the medical profession, as Neurasthenia, or Nervous Asthenia, is becoming alarmingly prevalent.
This affection, also popularly known as Nervous Prostration, or Nervous Weakness, and, to the medical profession, as Neurasthenia, or Nervous Asthenia, is becoming alarmingly prevalent.
Fredo missed being handsome on account of an exceptionally large nose, small eyes and alarmingly bushy eyebrows.
The trees were scattered and clumped and rimmed with dark morass and marsh grass and pools of dim water, but their limbs bent out so alarmingly that there seemed to be an almost unbroken canopy of leaves overhead.
The press of bodies seemed to open up before Cyder, who had a smile and a nod for everyone, but she came to a sudden halt as an alarmingly large figure blocked her path.