In a way that is very loud or obvious, often used for emphasis or to show extreme emotion.
Screamingly can make people think of strong feelings, like being very happy or very scared.
Examples:
She was screamingly excited about the party.
The colors in the painting were screamingly bright.
The joke was screamingly funny.
The ice cream was screamingly delicious!
The monster was screamingly scary!
The music was screamingly loud and made my ears hurt.