Definitions

1. adjective

full of or characterized by a lot of energy or enthusiasm

“The kids were huffy and eager to start their summer vacation.”

2. noun

a person who is full of energy or enthusiasm, especially in a childish or silly way

“The huffy kids ran around in the playground.”

3. adverb

in a way that shows a lot of energy or enthusiasm

“She spoke huffy to the audience about her new project.”