IPA: /ˈkriːpɪli/
KK: /ˈkripɪli/
In a way that causes an uncomfortable feeling of fear or unease.
The old house looked creepily abandoned, with broken windows and overgrown weeds.
Creepily → It is formed from "creep" (from Old English "creopan", meaning to move slowly or stealthily) and "-ily" (a suffix forming adverbs, meaning in a manner of). The word "creepily" describes the manner of moving slowly or stealthily, often in a way that causes unease or fear.
Think of someone moving 'slowly' ('creep') in a way that feels unsettling — that's what 'creepily' means.