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silly
/ˈsɪl.i/
foolish or childish
The children laughed at the silly clown's antics.
The clown's foolish behavior made the children laugh.
informal
Foolish or lacking good sense; often in a playful or harmless way.
It was a silly mistake to forget my keys.
Forgetting my keys was a foolish error.
She made a silly face to make her baby brother laugh.
Her childish expression amused her brother.
Often used to describe lighthearted foolishness rather than serious stupidity. Can also imply innocence or naivety.
informal
Of little importance or trivial.
They argued over a silly disagreement about the movie ending.
Their trivial argument was about the movie's ending.
Used to downplay the significance of something.
Collocations
silly seasona period of time when people are less serious or more foolish, often in summersilly puttya stretchy, bouncy toy often used for stress relief
Pro Tip
Avoid overusing in formal writing
While 'silly' is fine in casual conversation, replace it with 'foolish' or 'unwise' in academic or professional texts to maintain formality.
Gold Rule
Context matters
Use 'silly' for lighthearted foolishness. For serious stupidity, use 'foolish' or 'unwise' instead.
Word Origin
From Middle English 'sely' (happy, prosperous), which evolved to mean 'pitiable' and later 'foolish' by the 16th century.
Usage Notes
Commonly used in informal contexts. Can be affectionate or mildly critical depending on tone. Avoid using in formal or professional settings to describe people.
English Dictionary