The main meaning of chilly is cold, but this word is often used for emotions too, just like "warm." A warm person is loving and kind, but a chilly person is unemotional, distant, and quiet. Chilly people are often called "aloof" — another word for someone who's not acting like a people person.

What type of word is chilly?

adjective, chill·i·er, chill·i·est. mildly cold or producing a sensation of cold; causing shivering; chill: a chilly breeze.

How do you tell if a word has a negative or positive connotation?

Connotation is an idea or feeling that a word evokes. If something has a positive connotation, it will evoke warm feelings. Meanwhile, something with a negative connotation will make someone feel less than pleasant. To call someone “verbose” when you want to say they're a “great conversationalist” may not convey that.