IPA: /ˈsɪl.kɪ.li/
KK: /ˈsɪlkɪli/
In a smooth and soft way, like silk.
The cat moved silkily across the room, barely making a sound.
Silkily → It is formed from "silk" (from Old English *seolc*, meaning a fine, soft fabric) and "-ily" (a suffix used to form adverbs meaning in the manner of). The word "silkily" means in a manner that resembles or is characteristic of silk, typically smooth and soft.
Think of the soft and smooth texture of silk, and remember that "silkily" describes something that feels or moves in a soft, smooth manner.