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slightly cold in temperature
The room felt chilly after the air conditioning was turned on.
The room became slightly cold when the air conditioning was activated.
She wore a jacket because it was chilly outside.
She put on a jacket because the weather was slightly cold.
Often used to describe a mild coldness that is not extreme.
'Chilly' is often used to describe mild coldness, especially in everyday conversation.
Use 'chilly' for mild coldness, not extreme cold.
From Middle English 'chilly', possibly from Old English 'ċeald' (cold) or Old Norse 'kaldr'.
Can also be used metaphorically to describe someone who is emotionally distant or unfriendly.