IPA: /ˈwɜːrɪŋli/
KK: /ˈwɜːriŋli/
In a way that causes concern or anxiety.
The news about the rising temperatures is worryingly alarming.
Worryingly → It is formed from "worry" (from Old English *wyrgan*, meaning to strangle or choke) and the suffix "-ingly" (meaning in a manner of). The word "worryingly" describes something done in a manner that causes anxiety or concern.
Think of the Old English word for strangle, which connects to the feeling of anxiety — that's why worryingly describes something that causes concern.