IPA: /ˈɡlɪtəɹɪŋli/
KK: /ˈɡlɪtərɪŋli/
In a way that shines brightly with many small flashes of light.
The stars were glitteringly bright in the night sky.
Glitteringly → It is formed from "glitter" (from Old English *glitrian*, meaning to shine or sparkle) and the suffix "-ingly" (indicating a manner or process). The word "glitteringly" means in a manner that shines or sparkles.
Think of something that shines or sparkles ('glitter') and how it does so in a certain way ('-ingly'). This helps you remember that 'glitteringly' describes something that shines brightly.