You're silly than your brother.
Stupid
Her smile was a rainbow that lightened up my day!
youthful; juvenile silly
No, the word 'silly' is an adjective, a word that describes a noun (a silly hat, a sillyquestion).The noun form for the adjective silly is silliness.
Metaphor is a noun.
metaphor
"Silly as a clown's nose."
rghfgh
a maetaphor using the word mousthe mouse is a house
you r dumm
he was a sneaky jackrabbit.
metaphor
• Shining Star like
Time is a slow-moving river, winding its way through the valleys of our lives.
the metaphor for silly could be a clown or a jokerSilly like a bucket, or silly as a goose are two possibilities. There are many more.
Her smile was a ray of sunshine, brightening up the room like a metaphorical sunbeam.
the watermelon big like a dick
A comparison without using a connection word is called a metaphor. The connection word is like or as.