dangerously
US /ˈdeɪn.dʒɚ.əs.li/
UK /ˈdeɪn.dʒɚ.əs.li/

1.
in a way that is likely to cause harm or injury
:
•
He was driving dangerously fast.
•
The building was dangerously close to collapsing.
2.
to an extreme or severe degree
:
•
The patient's condition is dangerously low.
•
It's dangerously cold outside.