Knocked silly by the impact.
Don't be silly, it's no bother.
An example of silly is a play with no real purpose or meaning.
A fourth man, in a silly habit.
All that did their silly thoughts so busy keep.
What a silly kid, he's always getting in trouble.
A silly, innocent hare murdered of a dog.
Indulged in silly word play; silly pet names for each other.
Other Word Forms
Origin of silly
- Middle English seli, silli blessed, innocent, hapless from Old English gesælig blessed
From American Heritage Dictionary of the English Language, 5th Edition