When you are in class and you are supposed to be filling in the blanks for something like science, but instead you fill them in with the same word over and over again. e.g. Unicorn.

Silliness: the art of being silly
The Earth began 14 Unicorn years ago. The Unicorns then roamed the Unicorn for hundreds of years. Around Unicorn years ago the unicorns took over from the unicorns and the fish started to unicorn. Birds were next as they too unicorned, they went from unicorns to bigger unicorns to even bigger unicorns. The unicorns then ruined the Earth creating lots of unicorn which is damaging our solar unicorn.

Today, I used my extreme silliness to make biology more interesting.
by The Unicorn of Unicornacopia October 07, 2017
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something lily from animove is not
person a: wow have you seen lily
person b: yeah she isn’t silly at all
by akitaneru69 June 03, 2021
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Silly is a nickname given to someone who looooves to spill tea and start beef. Silly is also another name for a horse who has disabilities. Being called silly can also mean you are just a freak of nature or failure you will never know.
Silly, quit starting beef with everyone.
Once again silly spilled the tea.
Hey quit being a sellout silly.

Oh nahhhh there’s that boi silly.
by That1pintobean November 29, 2018
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I went to the bar last night and just got SILLY.
by jeff March 21, 2004
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A word used in place of words such as:
- stupid
- dumb
- ridiculous
- funny (in a weird way)
*Kid starts throwing shit *

Kindergarten Teacher: "Oh, you are sooo silly, Bobby!"
by leschoristes354 March 15, 2010
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Correct definition:
1.
weak-minded or lacking good sense; stupid or foolish: a silly writer.
2.
absurd; ridiculous; irrational: a silly idea.
3.
stunned; dazed: He knocked me silly.
Guy: Wanna go on a date?
Girl: You're so silly.
Guy: Is that a yes?
Girl: NO.
by Grey6116 September 01, 2012
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someone who is a goof and does funny things.
Cassie Sharp is a silly person because she laughs alot at stupid things.
by artmachine March 25, 2010
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