chilling
The public now embraces technologies it found chillingly invasive not long ago.
Parts of the film are chillingly real.
The short video followed the chillingly familiar script of a masked captor threatening to kill a hostage.
As forbidding landscapes go, this is a chillingly wonderful place.

SMART Vocabulary: related words and phrases

Describing things that cause fear
awesome
awesomely
awesomeness
bloodcurdling
chilling
fearsomely
frightening
frighteningly
greasily
hair-raising
intimidating
intimidatingly
scarifying
scarifyingly
scarily
spooky
terrifying
terrifyingly
traumatic
traumatically